PPG Industries (PPG) 10-K 15 Feb 24 2023 FY Annual report Financial data

Cover

Cover - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Jan. 31, 2024	Jun. 30, 2023
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
Document Transition Report	false
Entity File Number	1-1687
Entity Registrant Name	PPG INDUSTRIES, INC.
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	25-0730780
Entity Address, Address Line One	One PPG Place
Entity Address, City or Town	Pittsburgh
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	15272
City Area Code	412
Local Phone Number	434-3131
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 34,856
Entity Common Stock, Shares Outstanding		235,254,665
Documents Incorporated by Reference	Portions of PPG Industries, Inc. Proxy Statement for its 2024 Annual Meeting of Shareholders (the “Proxy Statement”) to be filed with the Securities and Exchange Commission within 120 days after the end of the Company’s fiscal year, are incorporated herein by reference into Part III of this report.
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Entity Central Index Key	0000079879
Current Fiscal Year End Date	--12-31
Common Stock – Par Value $1.66 2/3
Entity Information [Line Items]
Title of 12(b) Security	Common Stock – Par Value $1.66 2/3
Trading Symbol	PPG
Security Exchange Name	NYSE
0.875% Notes due 2025
Entity Information [Line Items]
Title of 12(b) Security	0.875% Notes due 2025
Trading Symbol	PPG 25
Security Exchange Name	NYSE
1.875% Notes Due 2025 [Member]
Entity Information [Line Items]
Title of 12(b) Security	1.875% Notes due 2025
Trading Symbol	PPG 25A
Security Exchange Name	NYSE
1.400% Notes due 2027
Entity Information [Line Items]
Title of 12(b) Security	1.400% Notes due 2027
Trading Symbol	PPG 27
Security Exchange Name	NYSE
2.750% Notes Due 2029
Entity Information [Line Items]
Title of 12(b) Security	2.750% Notes due 2029
Trading Symbol	PPG 29A
Security Exchange Name	NYSE

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2023
Audit Information [Abstract]
Auditor Name	PricewaterhouseCoopers LLP
Auditor Location	Pittsburgh, Pennsylvania
Auditor Firm ID	238

Consolidated Statement of Incom

Consolidated Statement of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Net sales	$ 18,246	$ 17,652	$ 16,802
Cost of sales, exclusive of depreciation and amortization	10,745	11,096	10,286
Selling, general and administrative	4,222	3,842	3,780
Depreciation	391	388	389
Amortization	167	166	172
Research and development, net	433	448	439
Interest expense	247	167	121
Interest income	(140)	(54)	(26)
Impairment and other-related charges, net	160	245	21
Pension settlement charge	190	0	50
Asbestos-related claims reserve adjustment	0	0	(133)
Other charges/(income), net	83	(27)	(112)
Income before income taxes	1,748	1,381	1,815
Income tax expense	439	325	374
Income from continuing operations	1,309	1,056	1,441
(Loss)/income from discontinued operations, net of tax	0	(2)	19
Net income attributable to the controlling and noncontrolling interests	1,309	1,054	1,460
Less: Net income attributable to noncontrolling interests	39	28	21
Net income (attributable to PPG)	1,270	1,026	1,439
Income from continuing operations, net of tax	1,270	1,028	1,420
(Loss)/income from discontinued operations, net of tax	$ 0	$ (2)	$ 19
Earnings per common share
Continuing operations (in dollars per share)	$ 5.38	$ 4.35	$ 5.98
Discontinued operations (in dollars per share)	0	(0.01)	0.08
Net Income (attributable to PPG) (in dollars per share)	5.38	4.34	6.06
Earnings per common share - assuming dilution
Continuing operations (in dollars per share)	5.35	4.33	5.93
Discontinued operations (in dollars per share)	0	(0.01)	0.08
Net Income (attributable to PPG) (in dollars per share)	$ 5.35	$ 4.32	$ 6.01

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income attributable to the controlling and noncontrolling interests	$ 1,309	$ 1,054	$ 1,460
Defined benefit pension and other postretirement benefit adjustments	63	206	174
Unrealized foreign currency translation adjustments	509	(279)	(330)
Other comprehensive income/(loss), net of tax	572	(73)	(156)
Total comprehensive income	1,881	981	1,304
Less: amounts attributable to noncontrolling interests:
Net income	(39)	(28)	(21)
Unrealized foreign currency translation adjustments	(1)	13	5
Comprehensive income attributable to PPG	$ 1,841	$ 966	$ 1,288

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 1,514	$ 1,099
Short-term investments	75	55
Receivables	3,279	3,303
Inventories	2,127	2,272
Other current assets	436	444
Total current assets	7,431	7,173
Property, plant and equipment, net	3,644	3,328
Goodwill	6,200	6,078
Identifiable intangible assets, net	2,424	2,414
Deferred income taxes	273	95
Investments	259	244
Operating lease right-of-use assets	832	829
Other assets	584	583
Total	21,647	20,744
Current liabilities
Accounts payable and accrued liabilities	4,467	4,087
Restructuring reserves	87	138
Short-term debt and current portion of long-term debt	306	313
Current portion of operating lease liabilities	194	183
Total current liabilities	5,054	4,721
Long-term debt	5,748	6,503
Operating lease liabilities	622	636
Accrued pensions	588	566
Other postretirement benefits	450	476
Deferred income taxes	508	501
Other liabilities	654	632
Total liabilities	13,624	14,035
Commitments and contingent liabilities (See Note 15)
Shareholders’ equity
Common stock	969	969
Additional paid-in capital	1,202	1,130
Retained earnings	21,500	20,828
Treasury stock, at cost	(13,600)	(13,525)
Accumulated other comprehensive loss	(2,239)	(2,810)
Total PPG shareholders’ equity	7,832	6,592
Noncontrolling interests	191	117
Total shareholders’ equity	8,023	6,709
Total	$ 21,647	$ 20,744

Consolidated Statement of Share

Consolidated Statement of Shareholders' Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss	Total PPG	Non-controlling Interests
Beginning balance at Dec. 31, 2020	$ 5,815	$ 969	$ 1,008	$ 19,469	$ (13,158)	$ (2,599)	$ 5,689	$ 126
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to the controlling and noncontrolling interests	1,460			1,439			1,439	21
Other comprehensive loss, net of tax	(156)					(151)	(151)	(5)
Cash dividends	(536)			(536)			(536)
Purchase of treasury stock	(250)				(250)		(250)
Issuance of treasury stock	70		48		22		70
Stock-based compensation activity	25		25				25
Dividends paid on subsidiary common stock to noncontrolling interests	(6)							(6)
Acquisition of noncontrolling interests	(11)							(11)
Ending balance at Dec. 31, 2021	6,411	969	1,081	20,372	(13,386)	(2,750)	6,286	125
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to the controlling and noncontrolling interests	1,054			1,026			1,026	28
Other comprehensive loss, net of tax	(73)					(60)	(60)	(13)
Cash dividends	(570)			(570)			(570)
Purchase of treasury stock	(150)				(150)		(150)
Issuance of treasury stock	47		36		11		47
Stock-based compensation activity	10		10				10
Dividends paid on subsidiary common stock to noncontrolling interests	(13)							(13)
Acquisition of noncontrolling interests	(10)							(10)
Other	3		3				3
Ending balance at Dec. 31, 2022	6,709	969	1,130	20,828	(13,525)	(2,810)	6,592	117
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to the controlling and noncontrolling interests	1,309			1,270			1,270	39
Other comprehensive loss, net of tax	572					571	571	1
Cash dividends	(598)			(598)			(598)
Purchase of treasury stock	(100)				(100)		(100)
Issuance of treasury stock	83		58		25		83
Stock-based compensation activity	14		14				14
Dividends paid on subsidiary common stock to noncontrolling interests	(21)							(21)
Acquisition of noncontrolling interests	55							55
Ending balance at Dec. 31, 2023	$ 8,023	$ 969	$ 1,202	$ 21,500	$ (13,600)	$ (2,239)	$ 7,832	$ 191

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating activities
Income from continuing operations	$ 1,309	$ 1,056	$ 1,441
Adjustments to reconcile net income to cash from operations:
Depreciation and amortization	558	554	561
Asbestos-related claims reserve adjustment	0	0	(133)
Impairment and other-related charges, net	160	245	21
Stock-based compensation expense	59	35	57
Deferred income taxes	(183)	(157)	35
Cash contributions to pension plans	(46)	(11)	(10)
Cash used for restructuring actions	(57)	(85)	(77)
Change in certain asset and liability accounts (net of acquisitions):
Receivables	10	(268)	(63)
Inventories	203	(227)	(279)
Other current assets	(53)	(60)	32
Accounts payable and accrued liabilities	130	(8)	295
Noncurrent assets and liabilities, net	(47)	(136)	(109)
Taxes and interest payable	71	143	(64)
Other	107	(118)	(195)
Cash from operating activities	2,411	963	1,562
Investing activities
Capital expenditures	(549)	(518)	(371)
Business acquisitions, net of cash balances acquired	(109)	(114)	(2,137)
Proceeds from asset sales	36	117	47
Other	66	54	57
Cash used for investing activities	(556)	(461)	(2,404)
Financing activities
Proceeds from Term Loan Credit Agreement, net of fees	550	0	1,399
Repayment of Term Loan Credit Agreement	(1,100)	(300)	0
Net (payments on)/proceeds from commercial paper and short-term debt	0	(439)	190
Repayment of Term Loan	0	0	(400)
Proceeds from the issuance of debt, net of discounts and fees	0	1,116	692
Repayment of long-term debt	(300)	0	(847)
Repayment of acquired debt	0	(2)	(207)
Purchase of treasury stock	(86)	(190)	(210)
Dividends paid on PPG common stock	(598)	(570)	(536)
Other	(16)	(24)	12
Cash (used for)/from financing activities	(1,550)	(409)	93
Effect of currency exchange rate changes on cash and cash equivalents	110	1	(72)
Net increase/(decrease) in cash and cash equivalents	415	94	(821)
Cash and cash equivalents, beginning of year	1,099	1,005	1,826
Cash and cash equivalents, end of year	1,514	1,099	1,005
Supplemental disclosures of cash flow information:
Interest paid, net of amount capitalized	213	156	140
Taxes paid, net of refunds	495	452	491
Capital expenditures accrued within Accounts payable and accrued liabilities at year-end	174	76	163
Purchases of treasury stock transacted but not yet settled	14	0	40
Pension settlement charge	$ 190	$ 0	$ 50

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2023
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Principles of Consolidation The accompanying consolidated financial statements include the accounts of PPG Industries, Inc. (“PPG” or the “Company”) and all subsidiaries, both U.S. and non-U.S., that it controls. PPG owns more than 50% of the voting stock of most of the subsidiaries that it controls. For those consolidated subsidiaries in which the Company’s ownership is less than 100%, the outside shareholders’ interests are shown as noncontrolling interests. Investments in companies in which PPG owns 20% to 50% of the voting stock and has the ability to exercise significant influence over operating and financial policies of the investee are accounted for using the equity method of accounting. As a result, PPG’s share of income or losses from such equity affiliates is included in the consolidated statement of income and PPG’s share of these companies’ shareholders’ equity is included in Investments on the consolidated balance sheet. Transactions between PPG and its subsidiaries are eliminated in consolidation. Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported amounts of income and expenses during the reporting period. Such estimates also include the fair value of assets acquired and liabilities assumed resulting from the allocation of the purchase price related to business combinations consummated. Actual outcomes could differ from those estimates. Revenue Recognition Revenue is recognized as performance obligations with the customer are satisfied, at an amount that is determined to be collectible. For the sale of products, this generally occurs at the point in time when control of the Company’s products transfers to the customer based on the agreed upon shipping terms. Shipping and Handling Costs Amounts billed to customers for shipping and handling are reported in Net sales in the consolidated statement of income. Shipping and handling costs incurred by the Company for the delivery of goods to customers are included in Cost of sales, exclusive of depreciation and amortization in the consolidated statement of income. Selling, General and Administrative Costs Amounts presented in Selling, general and administrative in the consolidated statement of income are comprised of selling, customer service, distribution and advertising costs, as well as the costs of providing corporate-wide functional support in areas such as finance, law, human resources and planning. Distribution costs pertain to the movement and storage of finished goods inventory at company-owned and leased warehouses and other distribution facilities. Advertising Costs Advertising costs are charged to expense as incurred and totaled $285 million, $252 million and $243 million in 2023, 2022 and 2021, respectively. Research and Development Research and development costs, which consist primarily of employee-related costs, are charged to expense as incurred. ($ in millions) 2023 2022 2021 Research and development – total $456 $470 $463 Less: depreciation on research facilities 23 22 24 Research and development, net $433 $448 $439 Legal Costs Legal costs, which primarily include costs associated with acquisition and divestiture transactions, general litigation, environmental regulation compliance, patent and trademark protection and other general corporate purposes, are charged to expense as incurred. Income Taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to operating losses and tax credit carryforwards as well as differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in Income tax expense in the consolidated statement of income in the period that includes the enactment date. A valuation allowance is provided against deferred tax assets in situations where PPG determines it is more likely than not such assets will not ultimately be realized. PPG does not recognize a tax benefit unless it concludes that it is more likely than not that the benefit will be sustained on audit by the taxing authority based solely on the technical merits of the associated tax position. If the recognition threshold is met, PPG recognizes a tax benefit measured at the largest amount of the tax benefit that, in PPG’s judgment, is greater than 50 percent likely to be realized. PPG records interest and penalties related to uncertain tax positions in Income tax expense in the consolidated statement of income. Foreign Currency Translation The functional currency of most significant non-U.S. operations is their local currency. Assets and liabilities of those operations are translated into U.S. dollars using year-end exchange rates; income and expenses are translated using the average exchange rates for the reporting period. Unrealized foreign currency translation gains and losses are deferred in Accumulated other comprehensive loss on the consolidated balance sheet. Cash Equivalents Cash equivalents are highly liquid investments (valued at cost, which approximates fair value) acquired with an original maturity of three months or less. Short-term Investments Short-term investments are highly liquid, high credit quality investments (valued at cost plus accrued interest) that have stated maturities of greater than three months to less than one year. The purchases and sales of these investments are classified as Investing activities in the consolidated statement of cash flows. Marketable Equity Securities The Company’s investment in marketable equity securities is recorded at fair market value and reported as Other current assets and Investments on the consolidated balance sheet with changes in fair market value recorded in income. Inventories Inventories are stated at the lower of cost or net realizable value. Most U.S. inventories are stated at cost, using the last-in, first-out (“LIFO”) method of accounting, which does not exceed net realizable value. All other inventories are stated at cost, using the first-in, first-out (“FIFO”) method of accounting, which does not exceed net realizable value. PPG determines cost using either average or standard factory costs, which approximate actual costs, excluding certain fixed costs such as depreciation and property taxes. Refer to Note 3, “Working Capital Detail” for further information concerning the Company’s inventories. Derivative Financial Instruments The Company recognizes all derivative financial instruments (a “derivative”) as either assets or liabilities at fair value on the consolidated balance sheet. The accounting for changes in the fair value of a derivative depends on the use of the instrument. For derivative instruments that are designated and qualify as cash flow hedges, the unrealized gains or losses on the derivatives are recorded in the consolidated statement of comprehensive income. Amounts in Accumulated other comprehensive loss on the consolidated balance sheet are reclassified into Income before income taxes in the consolidated statement of income in the same period or periods during which the hedged transactions are recorded in Income before income taxes in the consolidated statement of income. For derivative instruments that are designated and qualify as fair value hedges, the change in the fair value of the derivatives are reported in Income before income taxes in the consolidated statement of income, offsetting the gain or loss recognized for the change in fair value of the asset, liability, or firm commitment that is being hedged. For derivatives, debt or other financial instruments that are designated and qualify as net investment hedges, the gains or losses associated with the financial instruments are reported as translation gains or losses in Accumulated other comprehensive loss on the consolidated balance sheet. Gains and losses in Accumulated other comprehensive loss related to hedges of the Company’s net investments in foreign operations are reclassified out of Accumulated other comprehensive loss and recognized in Income before income taxes in the consolidated statement of income upon a substantial liquidation, sale or partial sale of such investments or upon impairment of all or a portion of such investments. The cash flow impact of these instruments is classified as Investing activities in the consolidated statement of cash flows. Changes in the fair value of derivative instruments not designated as hedges for hedge accounting purposes are recognized in Income before income taxes in the consolidated statement of income in the period of change. Property, Plant and Equipment Property, plant and equipment is recorded at cost. Depreciation is computed on a straight-line method based on the estimated useful lives of related assets. Accelerated depreciation expense is recorded when facilities or equipment are subject to abnormal economic conditions, restructuring actions or obsolescence. The cost of significant improvements that add to productive capacity or extend the lives of properties are capitalized. Costs for repairs and maintenance are charged to expense as incurred. When a capitalized asset is retired or otherwise disposed of, the original cost and related accumulated depreciation balance are removed from the accounts and any related gain or loss is recorded in Income before income taxes in the consolidated statement of income. The amortization cost of finance lease assets is recorded in Depreciation expense in the consolidated statement of income. Property and other long-lived assets are reviewed for impairment whenever events or circumstances indicate that their carrying amounts may not be recoverable. Refer to Note 4, “Property, Plant and Equipment” for further details. Goodwill and Identifiable Intangible Assets Goodwill represents the excess of the cost over the fair value of acquired identifiable tangible and intangible assets less liabilities assumed from acquired businesses. Identifiable intangible assets acquired in business combinations are recorded based upon their fair value at the date of acquisition. PPG is a multinational manufacturer with 10 operating segments (which the Company refers to as “strategic business units”) that are organized based on the Company’s major products lines. These operating segments are also the Company’s reporting units for purposes of testing goodwill for impairment, which is tested at least annually in connection with PPG’s strategic planning process or more frequently if an indication of impairment exists. The Company tests goodwill for impairment by either performing a qualitative evaluation or a quantitative test. The qualitative evaluation is an assessment of factors, including reporting unit specific operating results as well as industry, market and general economic conditions, to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount, including goodwill. The Company may elect to bypass this qualitative assessment for some or all of its reporting units and perform a quantitative test. Quantitative goodwill impairment testing, if deemed necessary, is performed during the fourth quarter of each year by comparing the estimated fair value of an associated reporting unit as of September 30 to its carrying value. Fair value is estimated using a discounted cash flow model. Key assumptions and estimates used in the discounted cash flow model include projected future revenues, discount rates, operating cash flows, capital expenditures and tax rates. In 2023, the Company determined that the estimated fair value of the traffic solutions reporting unit was less than its carrying value, resulting in recognition of a goodwill impairment charge of $158 million in Impairment and other related charges, net in the accompanying consolidated statement of income. Refer to Note 6, “Goodwill and Other Identifiable Intangible Assets” for further details. The Company has determined that certain acquired trademarks have indefinite useful lives. The Company tests the carrying value of these trademarks for impairment at least annually, or as needed whenever events and circumstances indicate that their carrying amount may not be recoverable. In 2022, due to the adverse economic impacts of Russian military forces invading Ukraine, the Company identified indicators that the carrying value of an indefinite-lived intangible asset and certain definite-lived intangible assets associated with the Company's operations in Russia may not be recoverable, and the carrying value of those assets was assessed for impairment. As a result of this assessment, the Company recorded impairment charges of $124 million related to the indefinite-lived intangible asset and $23 million related to definite-lived intangible assets in the consolidated statement of income for the year ended December 31, 2022. Refer to Note 7, "Impairment and Other Related Charges, Net" for additional information. The annual indefinite-lived intangible asset impairment assessment takes place in the fourth quarter of each year either by completing a qualitative assessment or quantitatively by comparing the estimated fair value of each trademark as of September 30 to its carrying value. Fair value is estimated using the relief from royalty method (a discounted cash flow methodology). The qualitative assessment includes consideration of factors, including revenue relative to the asset being assessed, the operating results of the related business and industry, market and general economic conditions, to determine whether it is more likely than not that the fair value of the asset is less than its carrying amount. In 2023, the annual impairment testing review of indefinite-lived intangibles performed as of September 30, 2023 resulted in the Company recognizing an impairment charge of $2 million. Refer to Note 6, “Goodwill and Other Identifiable Intangible Assets” for further details. Identifiable intangible assets with finite lives are amortized on a straight-line basis over their estimated useful lives (1 to 30 years) and are reviewed for impairment whenever events or circumstances indicate that their carrying amount may not be recoverable. Receivables and Allowances All trade receivables are reported on the consolidated balance sheet at the outstanding principal adjusted for any allowance for doubtful accounts and any charge offs. The Company provides an allowance for doubtful accounts to reduce receivables to their estimated net realizable value when it is probable that a loss will be incurred. Those estimates are based on historical collection experience, current regional economic and market conditions, the aging of accounts receivable, assessments of current creditworthiness of customers, and forward-looking information. Refer to Note 20, “Revenue Recognition” for further details. Supply Chain Finance PPG has certain voluntary supply chain finance programs with financial intermediaries which provide participating suppliers the option to be paid by the intermediary earlier than the original invoice due date. PPG’s responsibility is limited to making payments on the terms originally negotiated with the suppliers, regardless of whether the intermediary pays the supplier in advance of the original due date. The range of payment terms PPG negotiates with suppliers are consistent, regardless of whether a supplier participates in a supply chain finance program. The total amount due to financial intermediaries to settle supplier invoices under supply chain finance programs was $301 million and $ 390 million Leases The Company determines if a contract is a lease at the inception of the arrangement. The Company reviews all options to extend, terminate, or purchase its right of use assets at the inception of the lease and accounts for these options when they are reasonably certain of being exercised. Certain real estate leases contain lease and non-lease components, which are accounted for separately. For certain equipment leases, lease and non-lease components are accounted for as a single lease component. Leases with an initial term of 12 months or less are not recorded on the consolidated balance sheet. Lease expense for these leases is recognized on a straight-line basis over the lease term. Variable lease expense is based on contractual arrangements with PPG’s lessors determined based on external indices or other relevant market factors. In addition, PPG’s variable lease expense also includes elements of a contract that do not represent a good or service but for which the lessee is responsible for paying. Nearly all of PPG’s lease contracts do not provide a readily determinable implicit rate. For these contracts, PPG’s estimated incremental borrowing rate is based on information available at the inception of the lease. Product Warranties The Company accrues for product warranties at the time the associated products are sold based on historical claims experience. The reserve, pretax charges against income and cash outlays for product warranties were not significant to the consolidated financial statements of the Company for any year presented. Asset Retirement Obligations An asset retirement obligation represents a legal obligation associated with the retirement of a tangible long-lived asset that is incurred upon the acquisition, construction, development or normal operation of that long-lived asset. PPG recognizes asset retirement obligations in the period in which they are incurred if a reasonable estimate of fair value can be made. The asset retirement obligation is subsequently adjusted for changes in fair value. The associated estimated asset retirement costs are capitalized as part of the carrying amount of the long-lived asset and depreciated over its useful life. PPG’s asset retirement obligations are primarily associated with the retirement or closure of certain assets used in PPG’s manufacturing process. The accrued asset retirement obligation is recorded in Accounts payable and accrued liabilities and Other liabilities on the consolidated balance sheet and was $23 million as of both December 31, 2023 and 2022. PPG’s only conditional asset retirement obligation relates to the possible future abatement of asbestos contained in certain PPG production facilities. The asbestos in PPG’s production facilities arises from the application of normal and customary building practices in the past when the facilities were constructed. This asbestos is encapsulated in place and, as a result, there is no current legal requirement to abate it. Because there is no requirement to abate, the Company does not have any current plans or an intention to abate and therefore the timing, method and cost of future abatement, if any, are not known. The Company has not recorded an asset retirement obligation associated with asbestos abatement, given the uncertainty concerning the timing of future abatement, if any. Environmental Contingencies It is PPG’s policy to accrue expenses for environmental contingencies when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. Reserves for environmental contingencies are exclusive of claims against third parties and are generally not discounted. Assets and Liabilities Held for Sale The Company classifies assets and liabilities as held for sale (a “disposal group”) when management commits to a plan to sell the disposal group, the sale is probable within one year and the disposal group is available for immediate sale in its present condition. The Company considers various factors, particularly whether actions required to complete the plan indicate it is unlikely that significant changes to the plan will be made or the plan will be withdrawn. Assets held for sale are measured at the lower of carrying value or fair value less costs to sell. Any loss resulting from the measurement is recognized in the period the held-for-sale criteria are met. Conversely, gains are not recognized until the date of the sale. When the disposal group is classified as held for sale, depreciation and amortization ceases and the Company tests the assets for impairment. Reclassifications Certain reclassifications of prior years’ data have been made to conform to the current year presentation. These reclassifications had no impact on our previously reported Net income, cash flows or shareholders’ equity. Accounting Standards Adopted in 2023 Effective January 1, 2023, PPG adopted Accounting Standards Update ("ASU") No. 2022-04, “Liabilities - Supplier Finance Programs." This ASU is intended to enhance the transparency surrounding the use of supplier finance programs. The guidance does not affect the recognition, measurement, or financial statement presentation of obligations covered by supplier finance programs. Accounting Standards to be Adopted in Future Years

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2023
Business Combinations [Abstract]
Acquisitions	Acquisitions The pro-forma impact of the following acquisition on PPG’s sales and results of operations, including the pro-forma effect of events that are directly attributable to this acquisition, was not significant. Tikkurila On June 10, 2021, PPG completed its tender offer for all of the outstanding shares of Tikkurila Oyj ("Tikkurila"). Tikkurila is a leading Nordic producer and distributor of decorative paint and coatings, including an industrial paint business that produces paints and coatings for the wood and metal industries, among others. Immediately prior to the June 10, 2021 acquisition date, PPG owned 9.3% of Tikkurila’s issued and outstanding shares. Immediately following the acquisition date, PPG owned 97.1% of Tikkurila’s issued and outstanding shares. PPG continued to acquire the remaining shares not tendered during the tender offer period through a squeeze out process, ultimately achieving 100% ownership of Tikkurila’s outstanding shares during the fourth quarter of 2021. The results of this business since the date of acquisition have been reported within two operating segments: the architectural coatings – EMEA business and the industrial coatings business. The architectural coatings – EMEA business is included within the Performance Coatings reportable business segment and the industrial coatings business is included within the Industrial Coatings reportable business segment.

Working Capital Detail

Working Capital Detail	12 Months Ended
	Dec. 31, 2023
Disclosure Components Of Working Capital Detail [Abstract]
Working Capital Detail	Working Capital Detail ($ in millions) 2023 2022 Receivables Trade - net $2,881 $2,824 Other - net 398 479 Total $3,279 $3,303 Inventories (1) Finished products $1,197 $1,209 Work in process 236 238 Raw materials 640 784 Supplies 54 41 Total $2,127 $2,272 Accounts payable and accrued liabilities Trade $2,612 $2,538 Accrued payroll 674 501 Customer rebates 414 377 Other postretirement and pension benefits 96 77 Income taxes 128 37 Other 543 557 Total $4,467 $4,087 (1) Inventories valued using the LIFO method of inventory valuation comprised 20% and 21% of total gross inventory values as of December 31, 2023 and 2022, respectively. If the FIFO method of inventory valuation had been used, inventories would have been $249 million and $272 million higher as of December 31, 2023 and 2022, respectively.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment ($ in millions) Useful Lives (years) 2023 2022 Land and land improvements 1-30 $572 $548 Buildings 20-40 1,908 1,774 Machinery and equipment 5-25 4,157 3,960 Other 3-20 1,287 1,203 Construction in progress 683 492 Total $8,607 $7,977 Less: accumulated depreciation 4,963 4,649 Net $3,644 $3,328

Investments

Investments	12 Months Ended
	Dec. 31, 2023
Equity Method Investments and Joint Ventures [Abstract]
Investments	Investments ($ in millions) 2023 2022 Investments in equity affiliates $141 $134 Marketable equity securities (See Note 11) 74 61 Other 44 49 Total $259 $244 Investments in equity affiliates represent PPG’s ownership interests in entities between 20% and 50% that manufacture and sell coatings and certain chemicals. PPG’s share of undistributed net earnings of equity affiliates was $21 million, $25 million and $15 million in 2023, 2022 and 2021, respectively. Dividends received from equity affiliates were $17 million, $17 million and $9 million in 2023, 2022 and 2021, respectively.

Goodwill and Other Identifiable

Goodwill and Other Identifiable Intangible Assets	12 Months Ended
	Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Identifiable Intangible Assets	Goodwill and Other Identifiable Intangible Assets Goodwill ($ in millions) Performance Coatings Industrial Coatings Total January 1, 2022 $5,034 $1,214 $6,248 Acquisitions, including purchase accounting adjustments 31 15 46 Divestitures (40) — (40) Foreign currency impact (144) (32) (176) December 31, 2022 $4,881 $1,197 $6,078 Acquisitions, including purchase accounting adjustments 126 13 139 Divestitures (5) — (5) Foreign currency impact 150 (4) 146 Goodwill impairment (158) — (158) December 31, 2023 $4,994 $1,206 $6,200 In the fourth quarter, the Company tests the carrying value of goodwill for impairment, as discussed in Note 1. “Summary of Significant Accounting Policies.” Based on the annual goodwill impairment test performed in the fourth quarter 2023, the Company determined that the estimated fair value of the traffic solutions reporting unit was less than its carrying value, resulting in recognition of a goodwill impairment charge of $158 million in Impairment and other related charges, net in the accompanying consolidated statements of income. After recording the goodwill impairment charge of $158 million, the remaining goodwill balance recorded for the traffic solutions reporting unit was $391 million as of December 31, 2023. The fair value of the traffic solutions reporting unit was estimated using a discounted cash flow model. Key assumptions and estimates used in the discounted cash flow model included projected future revenues, a discount rate, operating cash flows, capital expenditures, and a tax rate. The decline in the fair value of the traffic solutions reporting unit compared to prior periods was primarily due to an increase in the weighted average cost of capital (discount rate assumption) reflecting the current interest rate environment. In addition, the fair value was impacted by a decline in the reporting unit’s long-term cash generation forecast due to the highly inflationary environment in Argentina and the fourth quarter 2023 divestitures of its European and Australian businesses. In 2022 and 2021, the annual impairment testing of goodwill did not result in impairment of any of the Company’s reporting units. As of December 31, 2023, accumulated goodwill impairment losses totaled $158 million. Identifiable Intangible Assets December 31, 2023 December 31, 2022 ($ in millions) Gross Carrying Amount Accumulated Amortization Net Gross Carrying Amount Accumulated Amortization Net Indefinite-Lived Identifiable Intangible Assets Trademarks $1,442 $— $1,442 $1,325 $— $1,325 Definite-Lived Identifiable Intangible Assets Acquired technology $845 ($678) $167 $827 ($636) $191 Customer-related 1,933 (1,259) 674 1,855 (1,112) 743 Trade names 319 (180) 139 311 (158) 153 Other 50 (48) 2 50 (48) 2 Total Definite Lived Intangible Assets $3,147 ($2,165) $982 $3,043 ($1,954) $1,089 Total Identifiable Intangible Assets $4,589 ($2,165) $2,424 $4,368 ($1,954) $2,414 In the fourth quarter, the Company tests the carrying value of indefinite-lived trademarks for impairment, as discussed in Note 1, “Summary of Significant Accounting Policies.” In conjunction with both the 2023 and 2022 annual impairment tests, the Company determined that the estimated fair value of certain trademarks in the Performance Coatings segment was less than the carrying value, resulting in recognition of impairment charges of $2 million and $4 million, respectively, in Impairment and other related charges, net in the accompanying consolidated statement of income. In 2021, the annual impairment testing review of indefinite-lived intangibles did not result in an impairment. In the first quarter 2022, due to the adverse economic impacts of the Russian invasion in Ukraine, the Company recognized $147 million of Impairment and other related charges, net in the consolidated statement of income related to certain definite-lived and indefinite-lived intangible assets in the Performance Coatings segment. Refer to Note 7, “Impairment and Other Related Charges, Net” for further details. Aggregate amortization expense was $167 million, $166 million and $172 million in 2023, 2022 and 2021, respectively. In the fourth quarter 2023, the Company recognized accelerated amortization expense of $6 million related to the exit of a non-core business. ($ in millions) 2024 2025 2026 2027 2028 Estimated future amortization expense $147 $128 $107 $96 $83

Impairment and Other Related Ch

Impairment and Other Related Charges	12 Months Ended
	Dec. 31, 2023
Restructuring and Related Activities [Abstract]
Impairment and Other Related Charges	7. Impairment and Other Related Charges, Net In 2023, the Company recorded a goodwill impairment charge for the traffic solutions reporting unit and indefinite-lived intangible asset impairment charges related to certain trademarks. In 2022, the Company recorded indefinite-lived intangible asset impairment charges for certain trademarks. Refer to Note 6, “Goodwill and Intangible Assets” for further detail related to these charges, which are included in Impairment and other related charges, net in the accompanying consolidated statement of income. Wind Down of Russia Operations In the first quarter 2022, Russian military forces invaded Ukraine. This military action had significant and immediate adverse economic impacts on businesses operating in Russia and Ukraine. Based on deteriorating business conditions and regulatory restrictions, including the impact of economic sanctions imposed on Russia by the United States, the European Union and other governments, PPG immediately ceased sales to Russian state-owned entities, announced that the Company would cease all new investments in Russia and commenced actions to wind down most of the Company’s operations in Russia. Based on this change in facts and circumstances, the long-term cash flow forecast for the Company’s operations in Russia was significantly reduced. This reduction in the long-term cash flow forecast indicated that the carrying amounts of long-lived assets and certain indefinite-lived intangible assets associated with the Company’s operations in Russia may not be recoverable, and the carrying value of these assets was tested for impairment. Additionally, the Company evaluated trade receivables for estimated future credit losses, inventories for declines in net realizable value and other current assets for impairment in light of the deteriorating economic conditions in Russia and Ukraine. As a result, during the three months ended March 31, 2022, the Company recognized $290 million of Impairment and other related charges, net in the consolidated statement of income, comprised of $201 million of long-lived asset impairment charges and $89 million of other related charges. The $201 million of long-lived asset impairment charges recorded during first quarter 2022 was comprised of $124 million related to indefinite-lived intangible assets, $54 million related to property, plant and equipment, net and $23 million related to definite-lived intangible assets. The $89 million of other related charges represented reserves established for receivables and other current assets and the write-down of inventories impacted by the adverse economic consequences of the Russian invasion of Ukraine. Subsequently, the Company released a portion of the previously established reserves due to the collection of certain trade receivables and recorded recoveries due to the realization of certain previously written-down inventories, resulting in recognition of income of $63 million within Impairment and other related charges, net. The Company divested its legacy industrial Russian operations during 2023 and continues to diligently work towards exiting Russia, including a possible sale of its remaining Russian business or controlled withdrawal from the Russia market. During both the years ended December 31, 2023 and 2022, net sales in Russia represented approximately 1% of PPG net sales. Businesses Classified as Held for Sale

Business Restructuring

Business Restructuring	12 Months Ended
	Dec. 31, 2023
Restructuring and Related Activities [Abstract]
Business Restructuring	Business Restructuring The Company records restructuring liabilities that represent charges incurred in connection with consolidations of certain operations, including operations from acquisitions, as well as headcount reduction programs. These charges consist primarily of severance costs and certain other cash costs. As a result of these programs, the Company will also incur incremental non-cash accelerated depreciation expense for certain assets due to their reduced expected asset life. These charges are not allocated to the Company’s reportable business segments. Refer to Note 21, “Reportable Business Segment Information” for additional information. In 2023, the Company approved business restructuring actions to reduce costs and improve the profitability of the overall business portfolio. The majority of these restructuring actions are expected to be completed by the end of 2024. In 2022, the Company approved a business restructuring plan which included actions to reduce its global cost structure in response to current economic conditions, including softening demand in Europe and lower than expected demand recovery in China. The Company performed a comprehensive evaluation to identify opportunities to reduce costs and improve the profitability of the overall business portfolio. The program includes actions to right-size employee headcount, reductions in functional and administrative costs and other cost savings actions. The majority of these restructuring actions are expected to be completed by the end of 2024. In 2021, the Company approved business restructuring actions related to recent acquisitions targeting further consolidation of its manufacturing footprint and headcount reductions. The majority of these restructuring actions are expected to be completed by the end of 2024. The following table summarizes restructuring reserve activity for the years ended December 31, 2023 and 2022: Total Reserve ($ in millions) 2023 2022 January 1 $169 $231 Approved restructuring actions 33 84 Release of prior reserves and other adjustments (a) (35) (51) Cash payments (57) (85) Foreign currency impact 3 (10) December 31 $113 $169 (a) Certain releases were recorded to reflect the current estimate of costs to complete planned business restructuring actions.

Leases

Leases	12 Months Ended
	Dec. 31, 2023
Leases [Abstract]
Leases	Leases PPG leases certain retail paint stores, warehouses, distribution facilities, office space, fleet vehicles and equipment. The components of lease expense for the years ended December 31, 2023, 2022 and 2021 were as follows: ($ in millions) Classification in the Consolidated Statement of Income 2023 2022 2021 Operating lease cost Cost of sales, exclusive of depreciation and amortization $46 $43 $41 Operating lease cost Selling, general and administrative 220 216 219 Total operating lease cost $266 $259 $260 Finance lease cost: Amortization of right-of-use assets Depreciation $2 $2 $2 Interest on lease liabilities Interest expense 1 1 1 Total finance lease cost $3 $3 $3 Total lease cost $269 $262 $263 Total operating lease cost for the years ended December 31, 2023, 2022 and 2021 is inclusive of the following: ($ in millions) 2023 2022 2021 Variable lease costs $20 $18 $18 Short-term lease costs $20 $22 $16 The lease amounts included in the consolidated balance sheet as of December 31, 2023 and 2022 were as follows: ($ in millions) Classification on the Consolidated Balance Sheet 2023 2022 Assets: Operating Operating lease right-of-use assets $832 $829 Finance (1) Property, plant, and equipment, net 14 15 Total leased assets $846 $844 Liabilities: Current Operating Current portion of operating lease liabilities $194 $183 Finance Short-term debt and current portion of long-term debt 2 3 Noncurrent Operating Operating lease liabilities $622 $636 Finance Long-term debt 6 7 Total lease liabilities $824 $829 (1) Net of accumulated depreciation of $15 million and $14 million as of December 31, 2023 and 2022, respectively. Supplemental cash flow information related to leases for the years ended December 31, 2023, 2022 and 2021 was as follows: ($ in millions) 2023 2022 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows paid for operating leases $224 $218 $224 Operating cash flows paid for finance leases $1 $1 $1 Financing cash flows paid for finance leases $3 $2 $3 Right-of-use assets obtained in exchange for lease obligations: Operating leases $174 $161 $253 Finance leases $1 $3 $— Lease terms and discount rates as of December 31, 2023, 2022 and 2021 were as follows: 2023 2022 2021 Weighted-average remaining lease term (in years) Operating leases 6.2 6.7 7.1 Finance leases 9.5 9.0 6.4 Weighted-average discount rate Operating leases 3.2 % 2.6 % 2.1 % Finance leases 5.9 % 5.7 % 5.8 % As of December 31, 2023, maturities of lease liabilities were as follows: ($ in millions) Operating Leases Finance Leases 2024 $216 $2 2025 176 2 2026 137 2 2027 103 1 2028 80 1 Thereafter 184 1 Total lease payments $896 $9 Less: Interest 80 1 Total lease obligations $816 $8
Leases	Leases PPG leases certain retail paint stores, warehouses, distribution facilities, office space, fleet vehicles and equipment. The components of lease expense for the years ended December 31, 2023, 2022 and 2021 were as follows: ($ in millions) Classification in the Consolidated Statement of Income 2023 2022 2021 Operating lease cost Cost of sales, exclusive of depreciation and amortization $46 $43 $41 Operating lease cost Selling, general and administrative 220 216 219 Total operating lease cost $266 $259 $260 Finance lease cost: Amortization of right-of-use assets Depreciation $2 $2 $2 Interest on lease liabilities Interest expense 1 1 1 Total finance lease cost $3 $3 $3 Total lease cost $269 $262 $263 Total operating lease cost for the years ended December 31, 2023, 2022 and 2021 is inclusive of the following: ($ in millions) 2023 2022 2021 Variable lease costs $20 $18 $18 Short-term lease costs $20 $22 $16 The lease amounts included in the consolidated balance sheet as of December 31, 2023 and 2022 were as follows: ($ in millions) Classification on the Consolidated Balance Sheet 2023 2022 Assets: Operating Operating lease right-of-use assets $832 $829 Finance (1) Property, plant, and equipment, net 14 15 Total leased assets $846 $844 Liabilities: Current Operating Current portion of operating lease liabilities $194 $183 Finance Short-term debt and current portion of long-term debt 2 3 Noncurrent Operating Operating lease liabilities $622 $636 Finance Long-term debt 6 7 Total lease liabilities $824 $829 (1) Net of accumulated depreciation of $15 million and $14 million as of December 31, 2023 and 2022, respectively. Supplemental cash flow information related to leases for the years ended December 31, 2023, 2022 and 2021 was as follows: ($ in millions) 2023 2022 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows paid for operating leases $224 $218 $224 Operating cash flows paid for finance leases $1 $1 $1 Financing cash flows paid for finance leases $3 $2 $3 Right-of-use assets obtained in exchange for lease obligations: Operating leases $174 $161 $253 Finance leases $1 $3 $— Lease terms and discount rates as of December 31, 2023, 2022 and 2021 were as follows: 2023 2022 2021 Weighted-average remaining lease term (in years) Operating leases 6.2 6.7 7.1 Finance leases 9.5 9.0 6.4 Weighted-average discount rate Operating leases 3.2 % 2.6 % 2.1 % Finance leases 5.9 % 5.7 % 5.8 % As of December 31, 2023, maturities of lease liabilities were as follows: ($ in millions) Operating Leases Finance Leases 2024 $216 $2 2025 176 2 2026 137 2 2027 103 1 2028 80 1 Thereafter 184 1 Total lease payments $896 $9 Less: Interest 80 1 Total lease obligations $816 $8

Borrowings and Lines of Credit

Borrowings and Lines of Credit	12 Months Ended
	Dec. 31, 2023
Debt Disclosure [Abstract]
Borrowings and Lines of Credit	Borrowings and Lines of Credit Long-term Debt Obligations ($ in millions) Maturity Date 2023 2022 3.2% notes ($300) (1) 2023 $— $300 Term Loan Credit Agreement, due 2024 ($1,400) 2024 — 1,099 2.4% notes ($300) 2024 299 299 0.875% notes (€600) 2025 660 639 1.875% notes (€300) 2025 330 319 1.2% notes ($700) 2026 696 694 Term Loan Credit Agreement, due 2026 (€500) 2026 552 — 1.4% notes (€600) 2027 659 638 3.75% notes ($800) (2) 2028 808 809 2.5% notes (€80) 2029 87 85 2.8% notes ($300) 2029 298 298 2.75% notes (€700) 2029 768 743 2.55% notes ($300) 2030 297 297 1.95% note (€50) 2037 54 52 7.7% notes ($176) 2038 174 174 5.5% notes ($250) 2040 247 247 3.0% notes (€120) 2044 126 122 Various other non-U.S. debt Various 1 1 Finance lease obligations Various 8 10 Impact of derivatives on debt (3) N/A (14) (20) Total $6,050 $6,806 Less payments due within one year N/A 302 303 Long-term debt $5,748 $6,503 (1) In February 2018, PPG entered into interest rate swaps which converted $150 million of the notes from a fixed interest rate to a floating interest rate based on the three month London Interbank Offered Rate (LIBOR). The impact of the derivative on the notes represents the fair value adjustment of the debt. The average effective interest rate for the portion of the notes impacted by the swaps was 5.1% and 2.2% for the years ended December 31, 2023 and 2022, respectively. In March 2023 the obligation was repaid and the associated interest rate swaps were settled. Refer to Note 11, “Financial Instruments, Hedging Activities and Fair Value Measurements” for additional information. (2) In February 2018, PPG entered into interest rate swaps which converted $375 million of the notes from a fixed interest rate to a floating interest rate based on the three month LIBOR. The impact of the derivative on the notes represents the fair value adjustment of the debt. The average effective interest rate for the portion of the notes impacted by the swaps was 6.2% and 2.6% for the years ended December 31, 2023 and 2022, respectively. Refer to Note 11, “Financial Instruments, Hedging Activities and Fair Value Measurements” for additional information. (3) Fair value adjustment of the 3.2% $300 million notes and 3.75% $800 million notes as a result of fair value hedge accounting treatment related to the outstanding interest rate swaps as of December 31, 2023 and 2022, respectively. In March 2023, the 3.2% $300 million notes were repaid and the associated interest rate swaps were settled. Refer to Note 11, “Financial Instruments, Hedging Activities and Fair Value Measurements” for additional information. Credit Agreements In April 2023, PPG entered into a €500 million term loan credit agreement (the "Term Loan"). The Term Loan provides the Company with the ability to increase the size of the loan by an amount not to exceed €250 million. The Term Loan contains covenants that are consistent with those in the Credit Agreement discussed below and that are usual and customary restrictive covenants for facilities of its type, which include, with specified exceptions, limitations on the Company’s ability to create liens or other encumbrances, to enter into sale and leaseback transactions and to enter into consolidations, mergers or transfers of all or substantially all of its assets. The Term Loan terminates and all amounts outstanding are payable in April 2026. In April 2023, PPG borrowed €500 million under the Term Loan. In December 2023, PPG obtained lender commitments sufficient to increase the size of the Term Loan by €250 million. In January 2024, PPG borrowed the additional €250 million. The Term Loan is denominated in euro and has been designated as a hedge of the net investment in the Company’s European operations. For more information, refer to Note 11 “Financial Instruments, Hedging Activities and Fair Value Measurements.” In March 2023, PPG amended its five-year credit agreement (the “Credit Agreement”) dated as of August 30, 2019. The amendments to the Credit Agreement replace the LIBOR-based reference interest rate option with a reference interest rate option based upon Term SOFR. The other terms of the Credit Agreement remained unchanged. In July 2023, PPG amended and restated the Credit Agreement, extending the term through July 27, 2028. The amended and restated Credit Agreement provides for a $2.3 billion unsecured revolving credit facility. The Company has the ability to increase the size of the Credit Agreement by up to an additional $750 million, subject to the receipt of lender commitments and other conditions precedent. The Company has the right, subject to certain conditions set forth in the Credit Agreement, to designate certain subsidiaries of the Company as borrowers under the Credit Agreement. In connection with any such designation, the Company is required to guarantee the obligations of any such subsidiaries under the Credit Agreement. There were no amounts outstanding under the Credit Agreement as of December 31, 2023 and December 31, 2022. Borrowings under the Credit Agreement may be made in U.S. Dollars or in euros. The Credit Agreement provides that loans will bear interest at rates based, at the Company’s option, on one of two specified base rates plus a margin based on certain formulas defined in the Credit Agreement. Additionally, the Credit Agreement contains a Commitment Fee, as defined in the Credit Agreement, on the amount of unused commitments under the Credit Agreement ranging from 0.060% to 0.125% per annum. The Credit Agreement also supports the Company’s commercial paper borrowings which are classified as long-term based on PPG’s intent and ability to refinance these borrowings on a long-term basis. There were no commercial paper borrowings outstanding as of both December 31, 2023 and December 31, 2022. The Credit Agreement contains usual and customary restrictive covenants for facilities of its type, which include, with specified exceptions, limitations on the Company’s ability to create liens or other encumbrances, to enter into sale and leaseback transactions and to enter into consolidations, mergers or transfers of all or substantially all of its assets. The Credit Agreement also requires the Company to maintain a ratio of Total Indebtedness to Total Capitalization, as defined in the Credit Agreement, of 60% or less; provided, that for any fiscal quarter in which the Company has made an acquisition for consideration in excess of $1 billion and for the next five fiscal quarters thereafter, the ratio of Total Indebtedness to Total Capitalization may not exceed 65% at any time. As of December 31, 2023, Total Indebtedness to Total Capitalization as defined under the Credit Agreement was 42%. The Credit Agreement contains, among other things, customary events of default that would permit the lenders to accelerate the loans, including the failure to make timely payments when due under the Credit Agreement or other material indebtedness, the failure to satisfy covenants contained in the Credit Agreement, a change in control of the Company and specified events of bankruptcy and insolvency. Other Long-term Debt Activities In March 2023, PPG’s $300 million 3.2% notes matured, and the Company repaid this obligation using cash on hand. In May 2022, PPG completed a public offering of €300 million 1.875% Notes due 2025 and €700 million 2.750% Notes due 2029. These notes were issued pursuant to PPG’s existing shelf registration statement and pursuant to an indenture between the Company and The Bank of New York Mellon Trust Company, N.A., as trustee, as supplemented (the "2022 Indenture"). The 2022 Indenture governing these notes contains covenants that limit the Company’s ability to, among other things, incur certain liens securing indebtedness, engage in certain sale-leaseback transactions, and enter into certain consolidations, mergers, conveyances, transfers or leases of all or substantially all the Company’s assets. The terms of these notes also require the Company to make an offer to repurchase Notes upon a Change of Control Triggering Event (as defined in the 2022 Indenture) at a price equal to 101% of their principal amount plus accrued and unpaid interest. The Company may issue additional debt from time to time pursuant to the Indenture. The aggregate cash proceeds from the notes, net of discounts and fees, was $1,061 million. The notes are denominated in euro and have been designated as hedges of net investments in the Company’s European operations. Refer to Note 11 “Financial Instruments, Hedging Activities and Fair Value Measurements.” for additional information. In March 2022, PPG privately placed a 15-year €50 million 1.95% fixed interest note. This note contains covenants materially consistent with the 1.200% notes discussed below. This debt arrangement is denominated in euros and has been designated as a net investment hedge of the Company's European operations. Refer to Note 11 "Financial Instruments, Hedging Activities and Fair Value Measurements" for additional information. In December 2021, PPG completed an early redemption of the €600 million 0.875% notes due March 2022 using cash on hand. In the second quarter of 2021, two of PPG's long-term debt obligations matured; $134 million 9% non-callable debentures and non-U.S. debt of €30 million. The Company paid $170 million to settle these obligations using cash on hand. In March 2021, PPG completed a public offering of $700 million aggregate principal amount of 1.200% notes due 2026. These notes were issued pursuant to PPG’s existing shelf registration statement and pursuant to the Indenture between the Company and the Bank of New York Mellon Trust Company, N.A., as trustee, as supplemented (the "2021 Indenture"). The 2021 Indenture governing these notes contains covenants that limit the Company’s ability to, among other things, incur certain liens securing indebtedness, engage in certain sale-leaseback transactions, and enter into certain consolidations, mergers, conveyances, transfers or leases of all or substantially all the Company’s assets. The terms of these notes also require the Company to make an offer to repurchase the notes upon a Change of Control Triggering Event (as defined in the 2021 Indenture) at a price equal to 101% of their principal amount plus accrued and unpaid interest. The Company may issue additional debt from time to time pursuant to the 2021 Indenture. The aggregate cash proceeds from the notes, net of discounts and fees, was $692 million. In February 2021, PPG entered into a $2.0 billion Term Loan Credit Agreement (the "Term Loan Credit Agreement") to finance the Company’s acquisition of Tikkurila, and to pay fees, costs and expenses related thereto. The Term Loan Credit Agreement provided the Company with the ability to borrow up to an aggregate principal amount of $2.0 billion on an unsecured basis. In addition to the amounts borrowed to finance the acquisition of Tikkurila, the Term Loan Credit Agreement allowed the Company to make up to eleven additional borrowings prior to December 31, 2021, to be used for working capital and general corporate purposes. The Term Loan Credit Agreement contains covenants that are consistent with those in the Credit Agreement discussed below and that are usual and customary restrictive covenants for facilities of its type, which include, with specified exceptions, limitations on the Company’s ability to create liens or other encumbrances, to enter into sale and leaseback transactions and to enter into consolidations, mergers or transfers of all or substantially all of its assets. The Term Loan Credit Agreement matures and all outstanding borrowings are due and payable on the third anniversary of the date of the initial borrowing under the Agreement. In June 2021, PPG borrowed $700 million under Term Loan Credit Agreement to finance the Company’s acquisition of Tikkurila, and to pay fees, costs and expenses related thereto. In December 2021, PPG borrowed an additional $700 million under the Term Loan Credit Agreement. In March 2023, PPG amended the Term Loan Credit Agreement to replace the LIBOR-based reference interest rate option with a reference interest rate option based upon Term Secured Overnight Financing Rate ("SOFR"). The other terms of the Term Loan Credit Agreement remain unchanged. In 2022 and 2023, PPG repaid $300 million and $1.1 billion, respectively, of the Term Loan Credit Agreement using cash on hand. The Term Loan Credit Agreement was fully repaid as of December 31, 2023. Borrowings of $1.1 billion were outstanding under the Term Loan Credit Agreement as of December 31, 2022. Restrictive Covenants and Cross-Default Provisions As of December 31, 2023, PPG was in full compliance with the restrictive covenants under its various credit agreements, loan agreements and indentures. Additionally, the Company’s Credit Agreement contains customary cross-default provisions. These provisions provide that a default on a debt service payment of $100 million or more for longer than the grace period provided under another agreement may result in an event of default under this agreement. None of the Company’s primary debt obligations are secured or guaranteed by the Company’s affiliates. Long-term Debt Maturities ($ in millions) Maturity per year 2024 $302 2025 $989 2026 $1,250 2027 $662 2028 $784 Thereafter $2,063 Short-term Debt Obligations ($ in millions) 2023 2022 Various, weighted average 2.4% and 2.7% as of December 31, 2023 and 2022, respectively. $4 $10 Lines of Credit, Letters of Credit and Surety Bonds PPG’s non-U.S. operations have uncommitted lines of credit totaling $491 million of which none was used as of December 31, 2023. These uncommitted lines of credit are subject to cancellation at any time and are generally not subject to any commitment fees. The Company had outstanding letters of credit and surety bonds of $232 million and $231 million as of December 31, 2023 and 2022, respectively. The letters of credit secure the Company’s performance to third parties under certain self-insurance programs and other commitments made in the ordinary course of business. The Company does not believe any loss related to these letters of credit or surety bonds is likely.

Financial Instruments, Hedging

Financial Instruments, Hedging Activities and Fair Value Measurements	12 Months Ended
	Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Instruments, Hedging Activities and Fair Value Measurements	Financial Instruments, Hedging Activities and Fair Value Measurements Financial instruments include cash and cash equivalents, short-term investments, cash held in escrow, marketable equity securities, accounts receivable, company-owned life insurance, accounts payable, short-term and long-term debt instruments, and derivatives. The fair values of these financial instruments approximated their carrying values at December 31, 2023 and 2022, in the aggregate, except for long-term debt instruments. Hedging Activities The Company has exposure to market risk from changes in foreign currency exchange rates and interest rates. As a result, financial instruments, including derivatives, have been used to hedge a portion of these underlying economic exposures. Certain of these instruments qualify as fair value, cash flow, and net investment hedges upon meeting the requisite criteria, including effectiveness of offsetting hedged or underlying exposures. Changes in the fair value of derivatives that do not qualify for hedge accounting are recognized in Income before income taxes in the period incurred. PPG’s policies do not permit speculative use of derivative financial instruments. PPG enters into derivative financial instruments with high credit quality counterparties and diversifies its positions among such counterparties in order to reduce its exposure to credit losses. The Company did not realize a credit loss on derivatives during the three-year period ended December 31, 2023. All of PPG’s outstanding derivative instruments are subject to accelerated settlement in the event of PPG’s failure to meet its debt or payment obligations under the terms of the instruments’ contractual provisions. In addition, if the Company would be acquired and its payment obligations under its derivative instruments’ contractual arrangements are not assumed by the acquirer, or if PPG would enter into bankruptcy, receivership or reorganization proceedings, its outstanding derivative instruments would also be subject to accelerated settlement. In 2023 and 2022, there were no derivative instruments de-designated or discontinued as a hedging instrument. There were no gains or losses deferred in Accumulated other comprehensive loss on the consolidated balance sheet that were reclassified to Income before income taxes in the consolidated statement of income during the three-year period ended December 31, 2023 related to hedges of anticipated transactions that were no longer expected to occur. Fair Value Hedges The Company uses interest rate swaps from time to time to manage its exposure to changing interest rates. When outstanding, the interest rate swaps are typically designated as fair value hedges of certain outstanding debt obligations of the Company and are recorded at fair value. PPG has interest rate swaps which converted $375 million and $525 million of fixed rate debt to variable rate debt as of December 31, 2023 and December 31, 2022, respectively. The swaps are designated as fair value hedges and are carried at fair value. Changes in the fair value of these swaps and changes in the fair value of the related debt are recorded in Interest expense in the accompanying consolidated statement of income. The fair value of these interest rate swaps were liabilities of $14 million and $20 million at December 31, 2023 and 2022, respectively. Cash Flow Hedges At times, PPG designates certain foreign currency forward contracts as cash flow hedges of the Company’s exposure to variability in exchange rates on third party transactions denominated in foreign currencies. There were no outstanding cash flow hedges at December 31, 2023 and December 31, 2022, respectively. Net Investment Hedges PPG uses cross currency swaps and foreign currency euro-denominated debt to hedge a significant portion of its net investment in its European operations, as follows: PPG had U.S. dollar to euro cross currency swap contracts with total notional amounts of $475 million and $775 million as of December 31, 2023 and December 31, 2022, respectively, and designated these contracts as hedges of the Company's net investment in its European operations. During the term of these contracts, PPG will receive payment in U.S. dollars and make payments in euros to the counterparties. As of December 31, 2023 and 2022, the fair value of these contracts were net assets of $33 million and $88 million, respectively. At December 31, 2023 and 2022, PPG had designated €3.0 billion and €2.5 billion, respectively, of euro-denominated borrowings as hedges of a portion of its net investment in the Company’s European operations. The carrying value of these instruments at December 31, 2023 and 2022 was $3.3 billion and $2.6 billion, respectively. There were no foreign currency forward contracts designated as net investment hedges used or outstanding as of and for the periods ended December 31, 2023, 2022 and 2021. Other Financial Instruments PPG uses foreign currency forward contracts to manage net transaction exposures that do not qualify for hedge accounting; therefore, the change in the fair value of these instruments is recorded in Other charges/(income), net in the consolidated statement of income in the period of change. Underlying notional amounts related to these foreign currency forward contracts were $2.5 billion and $1.8 billion at December 31, 2023 and 2022, respectively. The fair values of these contracts were net assets of $23 million and $24 million a s of December 31, 2023 and 2022, respectively. Gains/Losses Deferred in Accumulated Other Comprehensive Loss As of December 31, 2023 and 2022, the Company had accumulated pretax unrealized translation gains in Accumulated other comprehensive loss on the consolidated balance sheet related to the euro-denominated borrowings, foreign currency forward contracts, and the cross currency swaps of $223 million and $327 million, respectively. The following table summarizes the amount of gains/(losses) deferred in Other comprehensive (loss)/income ("OCI") and the amount and location of gains recognized within the consolidated statement of income related to derivative and debt financial instruments for the years ended December 31, 2023, 2022 and 2021. All dollar amounts are shown on a pretax basis. 2023 2022 2021 ($ in millions) (Loss)/Gain Deferred in OCI (Loss)/Gain Recognized Gain Deferred in OCI Gain Recognized Gain Deferred in OCI Gain Recognized Caption in Consolidated Statement of Income Fair Value Interest rate swaps ($10) $8 $15 Interest expense Total Fair Value ($10) $8 $15 Net Investment Cross currency swaps ($15) $12 $38 $16 $53 $13 Interest expense Foreign denominated debt (89) — 85 — 173 — Total Net Investment ($104) $12 $123 $16 $226 $13 Economic Foreign currency forward contracts $49 $43 $23 Other charges/(income), net Fair Value Measurements The Company follows a fair value measurement hierarchy to measure its assets and liabilities. As of December 31, 2023 and 2022, respectively, the assets and liabilities measured at fair value on a recurring basis were cash equivalents, equity securities and derivatives. In addition, the Company measures its pension plan assets at fair value (see Note 14, “Employee Benefit Plans” for further details). The Company’s financial assets and liabilities are measured using inputs from the following three levels: Level 1 inputs are quoted prices in active markets for identical assets and liabilities that the Company has the ability to access at the measurement date. Level 1 inputs are considered to be the most reliable evidence of fair value as they are based on unadjusted quoted market prices from various financial information service providers and securities exchanges. Level 2 inputs are directly or indirectly observable prices that are not quoted on active exchanges, which include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means. The fair values of the derivative instruments reflect the instruments’ contractual terms, including the period to maturity, and uses observable market-based inputs, including forward curves. Level 3 inputs are unobservable inputs employed for measuring the fair value of assets or liabilities. The Company does not have any recurring financial assets or liabilities that are recorded in its consolidated balance sheets as of December 31, 2023 and 2022 that are classified as Level 3 inputs. Assets and liabilities reported at fair value on a recurring basis December 31, 2023 December 31, 2022 ($ in millions) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Assets: Other current assets: Marketable equity securities $9 $— $— $9 $— $— Foreign currency forward contracts (a) — 28 — — 27 — Cross currency swaps (b) — 2 — — 39 — Investments: Marketable equity securities $74 $— $— $61 $— $— Other assets: Cross currency swaps (b) $— $31 $— $— $49 $— Liabilities: Accounts payable and accrued liabilities: Foreign currency forward contracts (a) $— $5 $— $— $3 $— Interest rate swaps (c) — — — — 1 — Other liabilities: Interest rate swaps (c) $— $14 $— $— $19 $— (a) Derivatives not designated as hedging instruments (b) Net investment hedges (c) Fair value hedges Long-Term Debt ($ in millions) December 31, 2023 (a) December 31, 2022 (b) Long-term debt - carrying value $6,042 $6,796 Long-term debt - fair value $5,781 $6,375 (a) Excluding finance lease obligations of $8 million and short term borrowings of $4 million as of December 31, 2023. (b) Excluding finance lease obligations of $10 million and short term borrowings of $10 million as of December 31, 2022. The fair values of the debt instruments were measured using Level 2 inputs, including discounted cash flows and interest rates then currently available to the Company for instruments of the same remaining maturities.

Earnings Per Common Share

Earnings Per Common Share	12 Months Ended
	Dec. 31, 2023
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share ($ in millions, except per share amounts) 2023 2022 2021 Earnings per common share (attributable to PPG) Income from continuing operations, net of tax $1,270 $1,028 $1,420 (Loss)/income from discontinued operations, net of tax — (2) 19 Net income (attributable to PPG) $1,270 $1,026 $1,439 Weighted average common shares outstanding 236.0 236.1 237.6 Effect of dilutive securities: Stock options 0.5 0.5 1.0 Other stock compensation plans 0.7 0.7 0.8 Potentially dilutive common shares 1.2 1.2 1.8 Adjusted weighted average common shares outstanding 237.2 237.3 239.4 Earnings per common share (attributable to PPG) Income from continuing operations, net of tax $5.38 $4.35 $5.98 (Loss)/income from discontinued operations, net of tax — (0.01) 0.08 Net income (attributable to PPG) $5.38 $4.34 $6.06 Earnings per common share - assuming dilution (attributable to PPG) Income from continuing operations, net of tax $5.35 $4.33 $5.93 (Loss)/income from discontinued operations, net of tax — (0.01) 0.08 Net income (attributable to PPG) $5.35 $4.32 $6.01 Antidilutive securities (a) : Stock options 0.9 0.9 —

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes by taxing jurisdiction and by significant components consisted of the following: ($ in millions) 2023 2022 2021 Current U.S. federal $102 $137 $25 U.S. state and local 16 20 13 Foreign 504 325 301 Total current income tax expense $622 $482 $339 Deferred U.S. federal ($153) ($79) $12 U.S. state and local (14) (7) 3 Foreign (16) (71) 20 Total deferred income tax (benefit)/expense ($183) ($157) $35 Total income tax expense $439 $325 $374 A reconciliation of the statutory U.S. corporate federal income tax rate to the Company’s effective tax rate follows: 2023 2022 2021 U.S. federal income tax rate 21.0 % 21.0 % 21.0 % Changes in rate due to: Taxes on non-U.S. earnings 4.2 3.6 2.7 Change in valuation allowance reserves 3.4 0.6 — Other foreign tax effects (2.7) (1.6) (0.4) Impairment and other related charges, net 1.9 1.4 — Uncertain tax positions (1.7) (0.4) (1.4) U.S. tax benefit on foreign operations (0.9) (0.4) (1.6) U.S. tax incentives (0.8) (1.0) (0.6) Tax benefits from equity awards (0.2) (0.3) (0.3) U.S. state and local taxes — 0.7 0.8 Other 0.9 (0.1) 0.4 Effective income tax rate 25.1 % 23.5 % 20.6 % (Loss)/income before income taxes of the Company’s U.S. operations for 2023, 2022 and 2021 was $(75) million, $288 million and $469 million, respectively. Income before income taxes of the Company’s foreign operations for 2023, 2022 and 2021 was $1,823 million, $1,093 million and $1,346 million, respectively. Deferred income taxes Deferred income taxes are provided for the effect of temporary differences that arise because there are certain items treated differently for financial accounting than for income tax reporting purposes. The deferred tax assets and liabilities are determined by applying the enacted tax rate in the year in which the temporary difference is expected to reverse. ($ in millions) 2023 2022 Deferred income tax assets related to Employee benefits $273 $275 Contingent and accrued liabilities 61 67 Operating loss and other carry-forwards 279 218 Operating lease liabilities 203 203 Research and development amortization 214 149 Other 201 168 Valuation allowance (249) (182) Total $982 $898 Deferred income tax liabilities related to Property $223 $223 Intangibles 696 720 Employee benefits 47 81 Operating lease right-of-use assets 207 206 Other 44 74 Total $1,217 $1,304 Deferred income tax liabilities – net ($235) ($406) Net operating loss and credit carryforwards ($ in millions) 2023 2022 Expiration Available net operating loss carryforwards, tax effected: Indefinite expiration $86 $84 NA Definite expiration 72 66 2024-2043 Total $158 $150 Income tax credit carryforwards $108 $89 2024-2043 A valuation allowance of $249 million and $182 million has been established as of December 31, 2023 and 2022, respectively, for carryforwards and certain other items when the ability to utilize them is not likely. Undistributed foreign earnings The Company had $5.8 billion of undistributed earnings of non-U.S. subsidiaries as of December 31, 2023. This amount relates to approximately 265 subsidiaries in approximately 70 taxable jurisdictions. The Company estimates repatriation of undistributed earnings of non-U.S. subsidiaries as of December 31, 2023 would result in a tax cost o f $123 million . As of December 31, 2023, the Company had not changed its intention to reinvest foreign earnings indefinitely or repatriate when it is tax effective to do so, and as such, has not established a liability for foreign withholding taxes or other costs that would be incurred if the earnings were repatriated. Unrecognized tax benefits The Company files federal, state and local income tax returns in numerous domestic and foreign jurisdictions. In most tax jurisdictions, returns are subject to examination by the relevant tax authorities for a number of years after the returns have been filed. The Company is no longer subject to examinations by tax authorities in any major tax jurisdiction for years before 2008. Additionally, the Company is no longer subject to examination by the Internal Revenue Service for U.S. federal income tax returns filed for years through 2018. The examinations of the Company’s U.S. federal income tax returns for 2019 and 2020 are currently underway. A reconciliation of the total amounts of unrecognized tax benefits (excluding interest and penalties) as of December 31 follows: ($ in millions) 2023 2022 2021 January 1 $145 $158 $175 Current year tax positions - additions 16 19 12 Prior year tax positions - additions 33 2 10 Prior year tax positions - reductions (14) (2) (2) Statute of limitations expirations (9) (23) (19) Settlements (51) (3) (21) Foreign currency translation 1 (6) 3 December 31 $121 $145 $158 The Company expects that any reasonably possible change in the amount of unrecognized tax benefits in the next 12 months would not be significant. The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate was $117 million as of December 31, 2023. Interest and penalties ($ in millions) 2023 2022 2021 Accrued interest and penalties related to unrecognized tax benefits $14 $17 $17 (Income)/loss recognized in income tax expense related to interest and penalties ($2) $1 ($2) The Company recognizes accrued interest and penalties related to unrecognized tax benefits in income tax expense.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2023
Retirement Benefits [Abstract]
Employee Benefit Plans	Employee Benefit Plans Defined Benefit Plans PPG has defined benefit pension plans that cover certain employees worldwide. The principal defined benefit pension plans are those in the U.S., Canada, Germany, the Netherlands and the U.K. These plans in the aggregate represent approximately 93% of PPG’s total projected benefit obligation at December 31, 2023, of which the U.S. defined benefit pension plans represent the largest component. As of January 1, 2006, the Company’s U.S. salaried defined benefit plans were closed to new entrants. In 2011 and 2012, the Company approved amendments related to its U.S. and Canadian defined benefit plans pursuant to which employees stopped accruing benefits at certain dates based on the affected employee’s combined age and years of service to PPG. As of December 31, 2020, the Company’s U.S. and Canadian defined benefit plans were frozen for all participants. The Company plans to continue reviewing and potentially amending PPG defined benefit plans in the future. U.S. pension annuity contracts In March 2023, the Company purchased group annuity contracts that transferred to third-party insurance companies pension benefit obligations for certain of the Company’s retirees in the U.S. who were receiving their monthly retirement benefit payments from a U.S. pension plan. The amount of each affected retiree’s annuity payment is equal to the amount of such individual’s pension benefit. The purchase of group annuity contracts was funded directly by the assets of the U.S. plans. By transferring the obligations and assets to the insurance companies, the Company reduced its overall pension projected benefit obligation by $309 million and recognized a non-cash Pension settlement charge of $190 million in the consolidated statement of income for the year ended December 31, 2023. Canadian pension annuity contracts In December 2021, the Company purchased group annuity contracts that transferred pension benefit obligations for certain of the Company’s retirees in Canada who were receiving their monthly retirement benefit payments from PPG’s Canadian pension plans to a third-party insurance company. The amount of each affected retiree’s annuity payment is equal to the amount of such individual’s pension benefit. The purchase of group annuity contracts was funded directly by the assets of the Canadian plans. By transferring the obligations and assets to the insurance company, the Company reduced its overall pension projected benefit obligation by approximately $175 million and recognized a non-cash pension settlement charge of $50 million in the consolidated statement of income for the year ended December 31, 2021. Postretirement medical PPG sponsors welfare benefit plans that provide postretirement medical and life insurance benefits for certain U.S. and Canadian employees and their dependents of which the U.S. welfare benefit plans represent approximately 86% of PPG’s total projected benefit obligation at December 31, 2023. Salaried and certain hourly employees in the U.S. hired on or after October 1, 2004, or rehired on or after October 1, 2012 are not eligible for postretirement medical benefits. These plans in the U.S. and Canada require retiree contributions based on retiree-selected coverage levels for certain retirees and their dependents and provide for sharing of future benefit cost increases between PPG and participants based on management discretion. The Company has the right to modify, amend or terminate certain of these benefit plans in the future. Effective January 1, 2017, the Company-sponsored Medicare-eligible plans were replaced by a Medicare private exchange. The announcement of this plan design change triggered a remeasurement of PPG’s retiree medical benefit obligation using prevailing interest rates. The plan design change resulted in a $306 million reduction in the Company's postretirement benefit obligation. PPG accounted for the plan design change prospectively, and the impact was amortized to periodic postretirement benefit cost over a 5.6 year period through mid-2022. The following table sets forth the changes in projected benefit obligations (“PBO”), plan assets, the funded status and the amounts recognized on the accompanying consolidated balance sheet for the Company’s defined benefit pension and other postretirement benefit plans: Defined Benefit Pension Plans United States International Total PPG ($ in millions) 2023 2022 2023 2022 2023 2022 Projected benefit obligation, January 1 $1,425 $1,920 $961 $1,614 $2,386 $3,534 Service cost — — 7 9 7 9 Interest cost 62 45 49 28 111 73 Actuarial losses/(gains) 44 (449) 75 (485) 119 (934) Benefits paid (79) (91) (50) (49) (129) (140) Foreign currency translation adjustments — — 47 (126) 47 (126) Settlements (309) — (11) (22) (320) (22) Other — — (5) (8) (5) (8) Projected benefit obligation, December 31 $1,143 $1,425 $1,073 $961 $2,216 $2,386 Market value of plan assets, January 1 $1,028 $1,329 $946 $1,646 $1,974 $2,975 Actual return on plan assets 45 (228) 43 (506) 88 (734) Company contributions 28 — 18 11 46 11 Benefits paid (61) (73) (40) (41) (101) (114) Plan settlements (309) — (11) (22) (320) (22) Foreign currency translation adjustments — — 45 (140) 45 (140) Other — — (3) (2) (3) (2) Market value of plan assets, December 31 $731 $1,028 $998 $946 $1,729 $1,974 Funded Status ($412) ($397) ($75) ($15) ($487) ($412) Amounts recognized in the Consolidated Balance Sheet: Other assets (long-term) — — 152 183 152 183 Accounts payable and accrued liabilities (38) (17) (13) (12) (51) (29) Accrued pensions (374) (380) (214) (186) (588) (566) Net liability recognized ($412) ($397) ($75) ($15) ($487) ($412) Other Postretirement Benefit Plans United States International Total PPG ($ in millions) 2023 2022 2023 2022 2023 2022 Projected benefit obligation, January 1 $458 $631 $66 $93 $524 $724 Service cost 4 8 — — 4 8 Interest cost 23 13 4 3 27 16 Plan amendments (17) — — — (17) — Actuarial (gains)/losses (3) (154) 3 (20) — (174) Benefits paid (39) (40) (3) (4) (42) (44) Foreign currency translation adjustments — — 1 (6) 1 (6) Curtailments (2) — — — (2) — Projected benefit obligation, December 31 $424 $458 $71 $66 $495 $524 Amounts recognized in the Consolidated Balance Sheet: Accounts payable and accrued liabilities (41) (44) (4) (4) (45) (48) Other postretirement benefits (383) (414) (67) (62) (450) (476) Net liability recognized ($424) ($458) ($71) ($66) ($495) ($524) The PBO is the actuarial present value of benefits attributable to employee service rendered to date, including the effects of estimated future pay increases. The accumulated benefit obligation (“ABO”) is the actuarial present value of benefits attributable to employee service rendered to date, but does not include the effects of estimated future pay increases. The ABO for all defined benefit pension plans as of December 31, 2023 and 2022 was $2.2 billion and $2.3 billion, respectively. The following table details the pension plans where the benefit liability exceeds the fair value of the plan assets: Pensions ($ in millions) 2023 2022 Plans with PBO in Excess of Plan Assets: Projected benefit obligation $1,426 $1,863 Fair value of plan assets $771 $1,270 Plans with ABO in Excess of Plan Assets: Accumulated benefit obligation $1,366 $1,833 Fair value of plan assets $737 $1,266 Net actuarial losses/(gains) and prior service credit deferred in accumulated other comprehensive loss Pensions Other Postretirement Benefits ($ in millions) 2023 2022 2023 2022 Accumulated net actuarial losses/(gains) $682 $748 ($15) ($16) Accumulated prior service credit — — (20) (10) Total $682 $748 ($35) ($26) The accumulated net actuarial losses (gains) for pensions and other postretirement benefits relate primarily to historical changes in the discount rates. The accumulated net actuarial losses exceeded 10% of the higher of the market value of plan assets or the PBO at the beginning of each of the last three years; therefore, amortization of such excess has been included in net periodic benefit costs for pension and other postretirement benefits in these periods. The amortization period is the average remaining service period of active employees expected to receive benefits unless a plan is mostly inactive in which case the amortization period is the average remaining life expectancy of the plan participants. Accumulated prior service credit is amortized over the future service periods of those employees who are active at the dates of the plan amendments and who are expected to receive benefits. The net decrease in Accumulated other comprehensive loss (pretax) related to defined benefit pension and other postretirement benefit plans during the year ended December 31, 2023 was due to the following: ($ in millions) Pensions Other Postretirement Benefits Net actuarial loss arising during the year $141 $— Plan amendment — (17) Amortization of actuarial loss/(gain) (21) 1 Amortization of prior service credit — 7 Foreign currency translation adjustments 8 — Impact of settlements (194) — Net decrease ($66) ($9) The 2023 net actuarial loss related to the Company’s pension and other postretirement benefit plans was primarily due to a decrease in the weighted average discount rate used to determine the benefit obligation at December 31, 2023. The Company also recognized a net actuarial gain of $17 million in 2023 due to a plan amendment to its U.S. other postretirement benefits plan, whereby effective January 1, 2024, PPG eliminated retiree life insurance benefits for certain salaried active participants who are not eligible for retiree medical benefits. Net periodic benefit cost/(income) Pensions Other Postretirement Benefits ($ in millions) 2023 2022 2021 2023 2022 2021 Service cost $7 $9 $9 $4 $8 $12 Interest cost 111 73 65 27 16 14 Expected return on plan assets (110) (140) (152) — — — Amortization of prior service credit — — — (7) (11) (54) Amortization of actuarial losses/(gains) 21 34 39 (1) 12 20 Settlements, curtailments, and special termination benefits 192 6 53 (2) — — Net periodic benefit cost/(income) $221 ($18) $14 $21 $25 ($8) Service cost for net periodic pension and other postretirement benefit costs is included in Cost of sales, exclusive of depreciation and amortization, Selling, general and administrative, and Research and development, net in the accompanying consolidated statement of income. Except for the U.S. pension settlement charge in 2023 and the Canadian pension settlement charge in 2021, which are both recorded in Pension settlement charge, all other non-service cost components of net periodic benefit cost are recorded in Other charges/(income), net in the accompanying consolidated statement of income. Key assumptions The following weighted average assumptions were used to determine the benefit obligation for the Company’s defined benefit pension and other postretirement plans as of December 31, 2023 and 2022: United States International Total PPG 2023 2022 2023 2022 2023 2022 Discount rate 5.2 % 5.4 % 4.5 % 4.9 % 4.9 % 5.2 % Rate of compensation increase 2.5 % 2.5 % 3.2 % 3.1 % 2.8 % 2.7 % The following weighted average assumptions were used to determine the net periodic benefit cost for the Company’s defined benefit pension and other postretirement benefit plans for the three years in the period ended December 31, 2023: 2023 2022 2021 Discount rate 5.2 % 2.5 % 2.1 % Expected return on assets 6.5 % 5.0 % 4.8 % Rate of compensation increase 2.7 % 2.6 % 1.5 % These assumptions for each plan are reviewed on an annual basis. In determining the expected return on plan asset assumption, the Company evaluates the mix of investments that comprise each plan’s assets and external forecasts of future long-term investment returns. The Company compares the expected return on plan assets assumption to actual historic returns to ensure reasonability. For 2023, the return on plan assets assumption for PPG’s U.S. defined benefit pension plans was 7.4%. A change in the rate of return of 75 basis points, with other assumptions held constant, would impact 2024 net periodic pension expense by $5 million. The global expected return on plan assets assumption to be used in determining 2024 net periodic pension expense will be 6.6% (7.7% for the U.S. plans only). The discount rates used in accounting for pension and other postretirement benefits are determined using a yield curve constructed of high-quality fixed-income securities as of the measurement date and using the plans’ projected benefit payments. The Company has elected to use a full yield curve approach in the estimation of the service and interest cost components of net periodic pension benefit cost/(income) for countries with significant pension plans. The full yield curve approach (also known as the split-rate or spot-rate method) allows the Company to align the applicable discount rates with the cost of additional service being earned and the interest being accrued on these obligations. A change in the discount rate of 75 basis points, with all other assumptions held constant, would impact 2024 net periodic benefit expense for our defined benefit pension and other postretirement benefit plans by $3 million and $2 million, respectively. The weighted-average health care cost trend rate (inflation) used for 2023 was 5.8% declining to a projected 3.9% in the year 2047. For 2024, the assumed weighted-average health care cost trend rate used will be 5.5% declining to a projected 3.9% between 2024 and 2048 for medical and prescription drug costs, respectively. These assumptions are reviewed on an annual basis. In selecting rates for current and long-term health care cost assumptions, the Company takes into consideration a number of factors, including the Company’s actual health care cost increases, the design of the Company’s benefit programs, the demographics of the Company’s active and retiree populations and external expectations of future medical cost inflation rates. Contributions to defined benefit pension plans ($ in millions) 2023 2022 2021 U.S. defined benefit pension plans $28 $— $— Non-U.S. defined benefit pension plans $18 $11 $10 PPG made voluntary contributions to its U.S. defined benefit pension plans of $28 million during 2023. Contributions made to PPG’s non-U.S. defined benefit pension plans in 2023, 2022, and 2021 were required by local funding requirements. In addition to any mandatory contributions, PPG may elect to make voluntary contributions to its defined benefit pension plans in 2024 and beyond. Benefit payments The estimated benefits expected to be paid under the Company’s defined benefit pension and other postretirement benefit plans are: ($ in millions) Pensions Other Postretirement Benefits 2024 $152 $45 2025 $137 $44 2026 $140 $41 2027 $145 $40 2028 $146 $40 2029 to 2033 $775 $177 Plan assets Each PPG sponsored defined benefit pension plan is managed in accordance with the requirements of local laws and regulations governing defined benefit pension plans for the exclusive purpose of providing pension benefits to participants and their beneficiaries. Investment committees comprised of PPG managers have fiduciary responsibility to oversee the management of pension plan assets by third party asset managers. Pension plan assets are held in trust by financial institutions and managed on a day-to-day basis by the asset managers. The asset managers receive a mandate from each investment committee that is aligned with the asset allocation targets established by each investment committee to achieve the plan’s investment strategies. The performance of the asset managers is monitored and evaluated by the investment committees throughout the year. Pension plan assets are invested to generate investment earnings over an extended time horizon to help fund the cost of benefits promised under the plans while mitigating investment risk. The asset allocation targets established for each pension plan are intended to diversify the investments among a variety of asset categories and among a variety of individual securities within each asset category to mitigate investment risk and provide each plan with sufficient liquidity to fund the payment of pension benefits to retirees. The following summarizes the weighted average target pension plan asset allocation as of December 31, 2023 and 2022 for all PPG defined benefit plans: Asset Category 2023 2022 Equity securities 15-45% 15-45% Debt securities 30-65% 30-65% Real estate 0-10% 0-10% Other 20-40% 20-40% The fair values of the Company’s pension plan assets at December 31, 2023 and 2022, by asset category, are as follows: December 31, 2023 December 31, 2022 ($ in millions) Level 1 (1) Level 2 (1) Level 3 (1) Total Level 1 (1) Level 2 (1) Level 3 (1) Total Asset Category Equity securities: U.S. Large cap $65 $55 $— $120 $66 $43 $— $109 Small cap 16 — — 16 25 — — 25 Non-U.S. Developed and emerging markets (2) 96 43 — 139 99 43 — 142 Debt securities: Cash and cash equivalents 22 41 — 63 7 47 — 54 Corporate (3) U.S. (4) — 1 — 1 — 168 80 248 Developed and emerging markets (2) — — — — — 1 — 1 Diversified (5) — — — — — 13 — 13 Government U.S. (4) — — — — 49 10 — 59 Developed and emerging markets (2) — 1 — 1 — 6 — 6 Other (6) — — 258 258 — — 235 235 Real estate, hedge funds, and other — 306 341 647 — 275 362 637 Total assets in the fair value hierarchy $199 $447 $599 $1,245 $246 $606 $677 $1,529 Common-collective trusts (7) — — — 484 — — — 445 Total Investments $199 $447 $599 $1,729 $246 $606 $677 $1,974 (1) These levels refer to the accounting guidance on fair value measurement described in Note 11, “Financial Instruments, Hedging Activities and Fair Value Measurements.” (2) This category represents holdings in investment grade debt or equity securities of issuers in both developed markets and emerging economies. (3) This category represents investment grade debt securities from a diverse set of industry issuers. (4) This category primarily represents long duration fixed income securities. (5) This category represents commingled funds invested in diverse portfolios of debt securities. (6) This category primarily represents insurance contracts. (7) Certain investments that are measured at net asset value per share (or its equivalent) are not required to be classified in the fair value hierarchy. The change in the fair value of the Company’s Level 3 pension assets for the years ended December 31, 2023 and 2022 was as follows: ($ in millions) Real Estate Other Debt Securities Hedge Funds and Other Assets Total January 1, 2022 $157 $367 $430 $954 Realized gains/(losses) 1 (99) (1) (99) Unrealized gains 6 — (3) 3 Transfers in/(out), net (10) (12) (100) (122) Foreign currency losses (5) (21) (33) (59) December 31, 2022 $149 $235 $293 $677 Realized gains/(losses) 4 25 (29) — Unrealized gains/(losses) (19) — 21 2 Transfers out, net (17) (9) (89) (115) Foreign currency losses 2 7 26 35 December 31, 2023 $119 $258 $222 $599 Real estate properties are externally appraised at least annually by reputable, independent appraisal firms. Property valuations are also reviewed on a regular basis and are adjusted if there has been a significant change in circumstances related to the property since the last valuation. Other debt securities primarily consist of insurance contracts, which are valued externally by insurance companies based on the present value of the expected future cash flows. Hedge funds consist of a wide range of investments which target a relatively stable investment return. The underlying funds are valued at different frequencies, some monthly and some quarterly, based on the value of the underlying investments. Other assets consist primarily of small investments in private equity funds and debt obligations of non-investment grade borrowers. Other Plans Employee savings plans PPG’s Employee Savings Plans (“Savings Plans”) cover substantially all employees in the U.S., Puerto Rico and Canada. The Company makes matching contributions to the Savings Plans, at management’s discretion, based upon participants’ savings, subject to certain limitations. For most participants, Company-matching contributions are established each year at the discretion of the Company and are applied to participant accounts up to a maximum of 6% of eligible participant compensation. The Company-matching contribution remained at 100% for 2023. Compensation expense and cash contributions related to the Company match of participant contributions to the Savings Plans for 2023, 2022, and 2021 totaled $61 million, $56 million and $52 million, respectively. A portion of the Savings Plans qualifies under the Internal Revenue Code as an Employee Stock Ownership Plan. Accordingly, dividends received on PPG shares held in that portion of the Savings Plans totaling $11 million, $11 million, and $10 million for 2023, 2022, and 2021, respectively, are deductible for PPG’s U.S. Federal tax purposes. Defined contribution plans Additionally, the Company has defined contribution plans for certain employees in the U.S., China, United Kingdom, Australia, Italy and other countries. The U.S. defined contribution plan is part of the Employee Savings Plan, and eligible employees receive a contribution equal to between 2% and 5% of annual compensation, based on age and years of service. For the years ended December 31, 2023, 2022 and 2021, the Company recognized expense for its defined contribution retirement plans of $90 million, $92 million and $88 million, respectively. The Company’s annual cash contributions to its defined contribution retirement plans approximated the expense recognized in each year. Deferred compensation plan The Company has a deferred compensation plan for certain key managers which allows them to defer a portion of their compensation in a phantom PPG stock account or other phantom investment accounts. The amount deferred earns a return based on the investment options selected by the participant. The amount owed to participants is an unfunded and unsecured general obligation of the Company. Upon retirement, death, disability, termination of employment, scheduled payment or unforeseen emergency, the compensation deferred and related accumulated earnings are distributed in accordance with the participant’s election in cash or in PPG stock, based on the accounts selected by the participant. The plan provides participants with investment alternatives and the ability to transfer amounts between the phantom non-PPG stock investment accounts. To mitigate the impact on compensation expense of changes in the market value of the liability, the Company has purchased a portfolio of marketable securities that mirror the phantom non-PPG stock investment accounts selected by the participants, except the money market accounts. These investments are carried by PPG at fair market value, and the changes in market value of these securities are also included in Income before income taxes in the consolidated statement of income. Trading occurs in this portfolio to align the securities held with the participant’s phantom non-PPG stock investment accounts, except the money market accounts. The cost of the deferred compensation plan, comprised of dividend equivalents accrued on the phantom PPG stock account, investment income and the change in market value of the liability, was $23 million, $23 million and $20 million in 2023, 2022 and 2021, respectively. These amounts are included in Selling, general and administrative in the consolidated statements of income. The change in market value of the investment portfolio was income of $21 million, $24 million, and $18 million in 2023, 2022 and 2021, respectively, and is also included in Selling, general and administrative in the consolidated statements of income. The Company’s obligations under this plan, which are included in Accounts payable and accrued liabilities and Other liabilities on the consolidated balance sheet, totaled $113 million and $105 million as of December 31, 2023 and 2022, respectively, and the investments in marketable securities, which are included in Investments and Other current assets on the accompanying consolidated balance sheet, were $83 million and $70 million as of December 31, 2023 and 2022, respectively.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	12 Months Ended
	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Commitments and Contingent Liabilities PPG is involved in a number of lawsuits and claims, both actual and potential, including some that it has asserted against others, in which substantial monetary damages are sought. These lawsuits and claims may relate to contract, patent, environmental, product liability, antitrust, employment and other matters arising out of the conduct of PPG’s current and past business activities. To the extent that these lawsuits and claims involve personal injury, property damage and certain other claims, PPG believes it has adequate insurance; however, certain of PPG’s insurers are contesting coverage with respect to some of these claims, and other insurers may contest coverage with respect to some claims in the future. PPG’s lawsuits and claims against others include claims against insurers and other third parties with respect to actual and contingent losses related to environmental, asbestos and other matters. The results of any current or future litigation and claims are inherently unpredictable. However, management believes that, in the aggregate, the outcome of all lawsuits and claims involving PPG will not have a material effect on PPG’s consolidated financial position or liquidity; however, such outcome may be material to the results of operations of any particular period in which costs, if any, are recognized. Asbestos Matters As of December 31, 2023, the Company was aware of certain asbestos-related claims pending against the Company and certain of its subsidiaries. The Company is defending these asbestos-related claims vigorously. The asbestos-related claims consist of claims against the Company alleging: • exposure to asbestos or asbestos-containing products manufactured, sold or distributed by the Company or its subsidiaries (“Products Claims”); • personal injury caused by asbestos on premises presently or formerly owned, leased or occupied by the Company (“Premises Claims”); and • asbestos-related claims against a subsidiary the Company acquired in 2013 (“Subsidiary Claims”). The Company monitors and reviews the activity associated with its asbestos claims and evaluates, on a periodic basis, its estimated liability for such claims and all underlying assumptions to determine whether any adjustment to the reserves for these claims is required. Additionally, as a supplement to its periodic monitoring and review, the Company conducts discussions with counsel and engages valuation consultants to analyze its claims history and estimate the amount of the Company’s potential liability for asbestos-related claims. In 2023 and 2022, no adjustments to the Company’s estimate of its asbestos-related liabilities were required. In 2021, based on the results of the Company’s valuation analysis, the Company reduced its estimate of potential liability for Products Claims by $146 million. The 2021 valuation analysis with respect to Products Claims was based, in part, upon a review of claims data following the expiration in May 2016 of the U.S. Bankruptcy Court’s injunction staying most asbestos claims against the Company that had been in effect since April 2000; annual filings by disease and year; pending, paid and dismissed claims; indemnity cash flows; and estimates of future claim, indemnity and acceptance rates. The Company also adjusted its estimates of potential liability for Premises Claims and Subsidiary Claims in the fourth quarter of 2021. As a result of the Company’s 2021 review of its asbestos-related liabilities, income of $133 million was recorded in the consolidated statement of income to reduce the reserve to reflect the Company’s current estimate of potential liability for asbestos-related bodily injury claims through December 31, 2057. As of December 31, 2023 and 2022, the Company’s asbestos-related reserves totaled $48 million and $51 million, respectively. The Company believes that, based on presently available information, the total reserves of $48 million for asbestos-related claims will be sufficient to encompass all of the Company’s current and estimable potential future asbestos liabilities. These reserves, which are included within Other liabilities on the accompanying consolidated balance sheets, involve significant management judgment and represent the Company’s current best estimate of its liability for these claims. The amount reserved for asbestos-related claims by its nature is subject to many uncertainties that may change over time, including (i) the ultimate number of claims filed; (ii) whether closed, dismissed or dormant claims are reinstituted, reinstated or revived; (iii) the amounts required to resolve both currently known and future unknown claims; (iv) the amount of insurance, if any, available to cover such claims; (v) the unpredictable aspects of the tort system, including a changing trial docket and the jurisdictions in which trials are scheduled; (vi) the outcome of any trials, including potential judgments or jury verdicts; (vii) the lack of specific information in many cases concerning exposure for which the Company is allegedly responsible, and the claimants’ alleged diseases resulting from such exposure; and (viii) potential changes in applicable federal and/or state tort liability law. All of these factors may have a material effect upon future asbestos-related liability estimates. While the ultimate outcome of the Company’s asbestos litigation cannot be predicted with certainty, the Company believes that any financial exposure resulting from its asbestos-related claims will not have a material adverse effect on the Company’s consolidated financial position, liquidity or results of operations. Environmental Matters In management’s opinion, the Company operates in an environmentally sound manner and the outcome of the Company’s environmental contingencies will not have a material effect on PPG’s financial position or liquidity; however, any such outcome may be material to the results of operations of any particular period in which costs, if any, are recognized. Management anticipates that the resolution of the Company’s environmental contingencies will occur over an extended period of time. As remediation at certain environmental sites progresses, PPG continues to refine its assumptions underlying the estimates of the expected future costs of its remediation programs. PPG’s ongoing evaluation may result in additional charges against income to adjust the reserves for these sites. In 2023, 2022 and 2021, certain charges have been recorded based on updated estimates to increase existing reserves for these sites. Certain other charges related to environmental remediation actions are recorded to expense as incurred. As of December 31, 2023 and 2022, PPG had reserves for environmental contingencies associated with PPG’s former chromium manufacturing plant in Jersey City, New Jersey (“New Jersey Chrome”), glass and chemical manufacturing sites, and for other environmental contingencies, including current manufacturing locations and National Priority List sites. These reserves are reported as Accounts payable and accrued liabilities and Other liabilities in the accompanying consolidated balance sheet. Environmental Reserves ($ in millions) 2023 2022 New Jersey Chrome $53 $58 Glass and chemical 54 60 Other 120 99 Total environmental reserves $227 $217 Current Portion $52 $50 Pretax charges against income for environmental remediation costs are included in Other charges/(income), net in the accompanying consolidated statement of income. The pretax charges and cash outlays related to such environmental remediation in 2023, 2022 and 2021, were as follows: ($ in millions) 2023 2022 2021 New Jersey Chrome $7 $— $25 Glass and chemical 5 3 12 Other 34 10 7 Total pretax environmental charges $46 $13 $44 Cash outlays for environmental spending $36 $78 $56 In the fourth quarter 2023, the Company recognized pretax environmental charges of $30 million related to certain legacy PPG manufacturing sites, primarily due to an increase in estimated environmental remediation costs at the Riverside Industrial Park Superfund Site in Newark, New Jersey (“Riverside”) and the New Jersey Chrome sites. The Company entered into a consent decree with the United States Department of Justice and the United States Environmental Protection Agency related to the Riverside site during the fourth quarter 2023, which resulted in an increase in estimated environmental remediation costs for soil cleanup and certain other costs. In the fourth quarter 2021, PPG released an environmental reserve previously established at the time of the sale of the flat glass business under the terms of the separation agreement, resulting in recognition of $25 million of income from discontinued operations, or $19 million net of tax. The Company continues to analyze, assess and remediate the environmental issues associated with New Jersey Chrome as further discussed below. Excluding the charges related to New Jersey Chrome, pretax charges against income for environmental remediation have ranged between approximately $5 million and $40 million per year for the past 10 years. Management expects cash outlays for environmental remediation costs to range from $40 million to $60 million in 2024, and $20 million to $75 million annually from 2025 through 2028. Actual future cash outlays may vary from expected future cash outlays and actual future costs may vary from accrued estimates due to the inherent uncertainties involved in estimating future environmental remediation costs, including possible technological, regulatory and enforcement developments, the results of environmental studies and other factors. Specifically, the level of expected future remediation costs and cash outlays is highly dependent upon activity related to New Jersey Chrome as discussed below. Remediation: New Jersey Chrome In June 2009, PPG entered into a settlement agreement with the New Jersey Department of Environmental Protection (“NJDEP”) and Jersey City, New Jersey (which had asserted claims against PPG for lost tax revenue) which was in the form of a Partial Consent Judgement (the "Consent"). Under the Consent, PPG accepted sole responsibility for the remediation activities at its former chromium manufacturing location in Jersey City and a number of additional surrounding sites. Remediation of the New Jersey Chrome sites requires PPG to remediate soil and groundwater contaminated by hexavalent chromium, as well as perform certain other environmental remediation activities. The most significant assumptions underlying the estimate of remediation costs for all New Jersey Chrome sites relate to the extent and concentration of chromium in the soil. PPG regularly evaluates the assessments of costs incurred to date versus current progress and the potential cost impacts of the most recent information, including the extent of impacted soils and groundwater, engineering, administrative and other associated costs. Based on these assessments, the reserve is adjusted accordingly. As of December 31, 2023 and 2022, PPG’s reserve for remediation of all New Jersey Chrome sites was $53 million and $58 million, respectively. The major cost components of this liability are related to excavation of impacted soil, as well as long-term monitoring. These components each account for approximately 65% and 10% of the amount accrued at December 31, 2023, respectively. There are multiple, future events yet to occur, including further remedy selection and design, remedy implementation and execution and applicable governmental agency or community organization approvals. Considerable uncertainty exists regarding the timing of these future events for the New Jersey Chrome sites. Further resolution of these events is expected to occur over the next several years. As these events occur and to the extent that the cost estimates of the environmental remediation remedies change, the existing reserve for this environmental remediation matter will continue to be adjusted. Remediation: Glass, Chemicals and Other Sites Among other sites at which PPG is managing environmental liabilities, remedial actions are occurring at a chemical manufacturing site in Barberton, Ohio where PPG has completed a Facility Investigation and Corrective Measure Study under the United States Environmental Protection Agency's Resource Conservation and Recovery Act Corrective Action Program. PPG has also been addressing the impacts from a legacy plate glass manufacturing site in Kokomo, Indiana under the Voluntary Remediation Program of the Indiana Department of Environmental Management and a site associated with a legacy plate glass manufacturing site near Ford City, Pennsylvania under the Pennsylvania Land Recycling Program under the oversight of the Pennsylvania Department of Environmental Protection. PPG is currently performing additional investigation and remedial activities at these locations. With respect to certain other waste sites, the financial condition of other potentially responsible parties also contributes to the uncertainty of estimating PPG’s final costs. Although contributors of waste to sites involving other potentially responsible parties may face governmental agency assertions of joint and several liability, in general, final allocations of costs are made based on the relative contributions of wastes to such sites. PPG is generally not a major contributor to such sites. Remediation: Reasonably Possible Matters In addition to the amounts currently reserved for environmental remediation, the Company may be subject to loss contingencies related to environmental matters estimated to be as much as $100 million to $200 million. Such unreserved losses are reasonably possible but are not currently considered to be probable of occurrence. These reasonably possible unreserved losses relate to environmental matters at a number of sites, none of which are individually significant. The loss contingencies related to these sites include significant unresolved issues such as the nature and extent of contamination at these sites and the methods that may have to be employed to remediate them. The impact of evolving programs, such as natural resource damage claims, industrial site re-use initiatives and domestic and international remediation programs, also adds to the present uncertainties with regard to the ultimate resolution of this unreserved exposure to future loss. The Company’s assessment of the potential impact of these environmental contingencies is subject to considerable uncertainty due to the complex, ongoing and evolving process of investigation and remediation, if necessary, of such environmental contingencies, and the potential for technological and regulatory developments.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Shareholders' Equity	Shareholders' Equity A class of 10 million shares of preferred stock, without par value, is authorized but unissued. Common stock has a par value of $1.66 2 / 3 per share; 1.2 billion shares are authorized. Common Stock Treasury Stock Shares Outstanding January 1, 2021 581,146,136 (344,459,871) 236,686,265 Purchases — (1,521,765) (1,521,765) Issuances — 742,526 742,526 December 31, 2021 581,146,136 (345,239,110) 235,907,026 Purchases — (1,269,830) (1,269,830) Issuances — 436,730 436,730 December 31, 2022 581,146,136 (346,072,210) 235,073,926 Purchases — (673,638) (673,638) Issuances — 810,566 810,566 December 31, 2023 581,146,136 (345,935,282) 235,210,854 Per share cash dividends paid were $2.54, $2.42 and $2.26 in 2023, 2022 and 2021, respectively.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss (AOCL) ($ in millions) Foreign Currency Translation Adjustments (1) Pension and Other Postretirement Benefit Adjustments, net of tax (2) Unrealized Gain on Derivatives, net of tax Accumulated Other Comprehensive Loss January 1, 2021 ($1,663) ($937) $1 ($2,599) Current year deferrals to AOCL (325) 132 — (193) Reclassifications from AOCL to net income — 42 — 42 December 31, 2021 ($1,988) ($763) $1 ($2,750) Current year deferrals to AOCL (301) 175 — (126) Reclassifications from AOCL to net income 35 31 — 66 December 31, 2022 ($2,254) ($557) $1 ($2,810) Current year deferrals to AOCL 475 (93) — 382 Reclassifications from AOCL to net income 33 156 — 189 December 31, 2023 ($1,746) ($494) $1 ($2,239) (1) The tax cost related to unrealized foreign currency translation adjustments on net investment hedges as of December 31, 2023, 2022 and 2021 was $47 million, $73 million and $55 million, respectively. (2) The tax cost related to the adjustment for pension and other postretirement benefits as of December 31, 2023, 2022 and 2021 was $20 million, $83 million and $48 million, respectively. Reclassifications from AOCL are included in the computation of net periodic benefit costs (see Note 14, “Employee Benefit Plans").

Other (Income)_Charges, Net

Other (Income)/Charges, Net	12 Months Ended
	Dec. 31, 2023
Other Income and Expenses [Abstract]
Other Earnings	Other Charges/(Income), Net ($ in millions) 2023 2022 2021 Environmental charges (1) $46 $13 $44 Pension and other postretirement benefit plans, non-service cost components 39 (10) (15) Share of net earnings of equity affiliates (See Note 5) (21) (25) (15) Loss/(gain) on sale of assets, net (2) 23 (4) (44) Argentina currency devaluation loss (3) 20 — — Royalty income (10) (8) (8) Business restructuring (income)/charges, net (2) 33 31 Income from legal settlements — — (22) Other, net (12) (26) (83) Total other charges/(income), net $83 ($27) ($112) (1) In 2023, PPG recognized charges of $30 million related to environmental remediation costs at certain legacy PPG manufacturing sites. (2) In 2023, PPG recognized a $22 million loss on the divestitures of the European and Australian traffic solutions businesses. In 2021, PPG recognized a $34 million gain on the sale of a production facility in connection with the Company’s manufacturing footprint consolidation plans and associated restructuring programs.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based Compensation The Company’s stock-based compensation includes stock options, restricted stock units (“RSUs”) and grants of contingent shares that are earned based on achieving targeted levels of total shareholder return. All current grants of stock options, RSUs and contingent shares are made under the PPG Industries, Inc. Amended and Restated Omnibus Incentive Plan (“PPG Amended Omnibus Plan”), which was amended and restated effective April 21, 2016. ($ in millions) 2023 2022 2021 Total stock-based compensation $59 $35 $57 Income tax benefit recognized $12 $8 $12 Stock Options PPG has outstanding stock option awards that have been granted under the PPG Amended Omnibus Plan. Under the PPG Amended Omnibus Plan, certain employees of the Company have been granted options to purchase shares of common stock at prices equal to the fair market value of the shares on the date the options were granted. The options are generally exercisable 36 months after being granted and have a maximum term of 10 years. Upon exercise of a stock option, shares of Company stock are issued from treasury stock. The fair value of stock options issued to employees is measured on the date of grant and is recognized as expense, net of estimated forfeitures, over the requisite service period. PPG estimates the fair value of stock options using the Black-Scholes option pricing model. The risk-free interest rate is determined by using the U.S. Treasury yield curve at the date of the grant and using a maturity equal to the expected life of the option. The expected life of options is calculated using the average of the vesting term and the maximum term, as prescribed by accounting guidance on the use of the simplified method for determining the expected term of an employee share option. The expected dividend yield and volatility are based on historical stock prices and dividend amounts over past time periods equal in length to the expected life of the options. PPG applies an estimated forfeiture rate that is calculated based on historical activity. The following weighted average assumptions were used to calculate the fair values of stock option grants in each year: 2023 2022 2021 Weighted average exercise price $130.17 $151.87 $136.60 Risk-free interest rate 3.9 % 2.0 % 1.0 % Expected life of option in years 6.5 6.5 6.5 Expected dividend yield 1.7 % 1.6 % 1.6 % Expected volatility 27.8 % 25.7 % 25.3 % The weighted average fair value of options granted was $38.55 per share, $36.52 per share and $29.27 per share for the years ended December 31, 2023, 2022, and 2021, respectively. Stock Options Outstanding and Exercisable Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Life (in years) Intrinsic Value (in millions) Outstanding, January 1, 2023 3,517,451 $117.16 5.7 Granted 410,001 $130.17 Exercised (566,439) $96.64 Forfeited/Expired (42,250) $138.64 Outstanding, December 31, 2023 3,318,763 $122.00 5.7 $92 Vested or expected to vest, December 31, 2023 3,225,942 $121.44 5.6 $92 Exercisable, December 31, 2023 2,042,184 $110.97 4.1 $79 At December 31, 2023, unrecognized compensation cost related to outstanding stock options that have not yet vested totaled $9 million. This cost is expected to be recognized as expense over a weighted average period of 1.7 years. The following table presents stock option activity for the years ended December 31, 2023, 2022 and 2021: ($ in millions) 2023 2022 2021 Total intrinsic value of stock options exercised $24 $12 $32 Cash received from stock option exercises $55 $12 $47 Income tax benefit from the exercise of stock options $6 $3 $8 Total fair value of stock options vested $10 $16 $11 Restricted Stock Units (“RSUs”) Long-term incentive value is delivered to selected key management employees by granting RSUs, which have either time or performance-based vesting features. The fair value of an RSU is equal to the market value of a share of PPG common stock on the date of grant. Time-based RSUs generally vest over the three-year period following the date of grant, unless forfeited, and will be paid out in the form of stock, cash or a combination of both at the Company’s discretion at the end of the three three The amount paid upon vesting of performance-based RSUs may range from 0% to 200% of the original grant, based upon the level of earnings per share growth achieved and frequency with which the annual cash flow return on capital performance target is met over the three RSU Activity Number of Shares Weighted Average Grant Date Fair Value Outstanding, January 1, 2023 589,388 $136.99 Granted 321,045 $130.63 Vested (271,037) $131.14 Forfeited (33,455) $136.26 Outstanding, December 31, 2023 605,941 $137.96 Vested or expected to vest, December 31, 2023 569,073 $137.94 There was $22 million of total unrecognized compensation cost related to unvested RSUs outstanding as of December 31, 2023. This cost is expected to be recognized as expense over a weighted average period of 1.7 years. Contingent Share Grants The Company also provides grants of contingent shares to selected key executives that may be earned based on PPG’s total shareholder return (“TSR”) over the three-year period following the date of grant. Contingent share grants (referred to as “TSR awards”) are made annually and are paid out at the end of each three-year period based on the Company’s performance. Performance is measured by determining the percentile rank of the total shareholder return of PPG common stock in relation to the total shareholder return of the S&P 500 for the three-year period following the date of grant. This comparison group represents the entire S&P 500 Index as it existed at the beginning of the performance period, excluding any companies that have been removed from the index because they ceased to be publicly traded. The payout is based on performance achieved during the three-year period calculated in accordance with the scale set forth in the plan agreement and may range from 0% to 200% of the initial grant. A payout of 100% is earned if the target performance is achieved. Contingent share awards earn dividend equivalents for the award period, which will be paid to participants or credited to the participants’ deferred compensation plan accounts with the award payout at the end of the period based on the actual number of contingent shares earned. Any payments made at the end of the award period may be in the form of stock, cash or a combination of both. The TSR awards are classified as liability awards, and compensation expense is recognized over the three-year award period based on the fair value of the awards (giving consideration to the Company’s percentile rank of total shareholder return) remeasured in each reporting period until settlement of the awards. The performance period for the TSR shares granted in 2021 ended on December 31, 2023, and PPG’s total shareholder return was measured against that of the S&P 500 over the three‑year period. PPG’s ranking on this performance measure was at the 32nd percentile, resulting in payouts at 55.2% of target. As of December 31, 2023, there was $9 million of total unrecognized compensation cost related to outstanding TSR awards based on the current estimate of fair value. This cost is expected to be recognized as expense over a weighted average period of 1.8 years.

Revenue Recognition

Revenue Recognition	12 Months Ended
	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition The Company recognizes revenue when control of the promised goods or services is transferred to the customer and in amounts that the Company expects to collect. The timing of revenue recognition takes into consideration the various shipping terms applicable to the Company’s sales. For most transactions, control passes in accordance with agreed upon delivery terms. The Company delivers products to company-owned stores, home centers and other regional or national consumer retail outlets, paint dealers, concessionaires and independent distributors, company-owned distribution networks, and directly to manufacturing companies and retail customers. Each product delivered to a third party customer is considered to satisfy a performance obligation. Performance obligations generally occur at a point in time and are satisfied when control of the goods passes to the customer. The Company is entitled to collection of the sales price under normal credit terms in the regions in which it operates. Accounts receivable are recognized when there is an unconditional right to consideration. Payment terms vary from customer to customer, depending on creditworthiness, prior payment history and other considerations. The Company also provides services by applying coatings to customers' manufactured parts and assembled products and by providing technical support to certain customers. Performance obligations are satisfied over time as critical milestones are met and as services are provided. PPG is entitled to payment as the services are rendered. For the years ended December 31, 2023, 2022 and 2021, service revenue constituted less than 5% of total revenue. Net sales by segment and region for the years ended December 31, 2023, 2022 and 2021 were as follows: ($ in millions) 2023 2022 2021 Performance Coatings United States and Canada $4,912 $4,718 $4,366 EMEA 3,627 3,550 3,582 Asia Pacific 1,104 1,118 1,254 Latin America 1,521 1,308 1,131 Total $11,164 $10,694 $10,333 Industrial Coatings United States and Canada $2,576 $2,666 $2,310 EMEA 1,989 1,908 1,854 Asia Pacific 1,770 1,705 1,723 Latin America 747 679 582 Total $7,082 $6,958 $6,469 Total Net Sales (1) United States and Canada (2) $7,488 $7,384 $6,676 EMEA 5,616 5,458 5,436 Asia Pacific 2,874 2,823 2,977 Latin America 2,268 1,987 1,713 Total PPG $18,246 $17,652 $16,802 (1) Net sales to external customers are attributed to geographic regions based upon the location of the operating unit shipping the product. (2) Net sales recognized in the United States represented 37%, 38%, and 36% of the Company’s total Net sales for the years ended December 31, 2023, 2022 and 2021, respectively. Allowance for Doubtful Accounts All trade receivables are reported on the consolidated balance sheet at the outstanding principal amount adjusted for any allowance for doubtful accounts and any charge-offs. PPG provides an allowance for doubtful accounts to reduce trade receivables to their estimated net realizable value equal to the amount that is expected to be collected. This allowance is estimated based on historical collection experience, current regional economic and market conditions, the aging of accounts receivable, assessments of current creditworthiness of customers and forward-looking information. The use of forward-looking information is based on certain macroeconomic and microeconomic indicators including, but not limited to, regional business environment risk, political risk, and commercial and financing risks. PPG reviews its allowance for doubtful accounts on a quarterly basis to ensure the estimate reflects regional risk trends as well as current and future global operating conditions. The following table summarizes allowance for doubtful accounts activity for the years ended December 31, 2023 and 2022: Trade Receivables Allowance for Doubtful Accounts ($ in millions) 2023 2022 January 1 $31 $31 Bad debt expense 17 52 Write-offs and recoveries of previously reserved trade receivables (21) (55) Other (2) 3 December 31 $25 $31 In the first quarter 2022, PPG recorded a bad debt reserve of $43 million associated with the adverse economic impacts of the Russian invasion of Ukraine. Subsequently, the Company released a portion of this previously established bad debt reserve due to the collection of certain trade receivables, resulting in a bad debt reserve related to PPG's operations in Russia of $11 million at December 31, 2022. Refer to Note 7, "Impairment and Other Related Charges, Net" for additional information.

Reportable Business Segment Inf

Reportable Business Segment Information	12 Months Ended
	Dec. 31, 2023
Segment Reporting [Abstract]
Reportable Business Segment Information	Reportable Business Segment Information Segment Organization and Products PPG is a multinational manufacturer with 10 operating segments (which the Company refers to as “strategic business units”) that are organized based on the Company’s major products lines. The Company’s reportable business segments include the following two segments: Performance Coatings and Industrial Coatings. The operating segments have been aggregated based on economic similarities, the nature of their products, production processes, end-use markets and methods of distribution. The Performance Coatings reportable business segment is comprised of the automotive refinish coatings, aerospace coatings, architectural coatings – Americas and Asia Pacific, architectural coatings – EMEA, protective and marine coatings and traffic solutions operating segments. This reportable business segment primarily supplies a variety of protective and decorative coatings, adhesives, sealants and finishes, along with paint strippers, stains and related chemicals, pavement marking products, transparencies, transparent armor and paint films. The Industrial Coatings reportable business segment is comprised of the automotive OEM coatings, industrial coatings, packaging coatings, and the specialty coatings and materials operating segments. This reportable business segment primarily supplies a variety of protective and decorative coatings and finishes along with adhesives, sealants, metal pretreatment products, optical monomers and coatings, low-friction coatings, paint films, precipitated silicas and other specialty materials. Production facilities and sales for Performance Coatings and Industrial Coatings are global. PPG’s reportable business segments continue to pursue opportunities to further develop their global reach. Each of the reportable business segments in which PPG is engaged is highly competitive. The diversification of our product lines and the worldwide sales tend to minimize the impact on PPG’s business of changes in demand in a particular industry or in a particular geographic area. The accounting policies of the operating segments are the same as those described in the summary of significant accounting policies (see Note 1, “Summary of Significant Accounting Policies”). The Company allocates resources to operating segments and evaluates the performance of operating segments based upon segment income, which is income before interest expense – net, income taxes, and noncontrolling interests and excludes certain charges which are considered to be unusual or non-recurring. The Company also evaluates performance of operating segments based on working capital management and selling price and sales volume performance. Corporate unallocated costs include the costs of corporate staff functions not directly associated with the operating segments, certain legal matters, net of related insurance recoveries, the cost of certain insurance and stock-based compensation programs and certain other unusual or non-recurring items. The service cost component of net periodic benefit cost related to current employees of each reportable business segment is allocated to that reportable business segment and the remaining portion of net periodic pension expense is included in the Corporate unallocated costs. Product movement between Performance Coatings and Industrial Coatings is limited, is accounted for as an inventory transfer, and is recorded at cost plus a mark-up, the impact of which is not significant to the net sales or segment income of the reportable business segments. ($ in millions) 2023 2022 2021 Net sales to external customers Performance Coatings $11,164 $10,694 $10,333 Industrial Coatings 7,082 6,958 6,469 Total Net sales $18,246 $17,652 $16,802 Segment income Performance Coatings $1,709 $1,399 $1,491 Industrial Coatings 966 643 680 Total Segment income $2,675 $2,042 $2,171 Corporate / Non-Segment Items Corporate unallocated (340) (218) (194) Interest expense, net of interest income (107) (113) (95) Impairment and other related charges, net (1) (160) (245) (21) Business restructuring-related costs, net (2) (43) (75) (27) Portfolio optimization (3) (53) (10) (86) Pension settlement charge (4) (190) — (50) Environmental remediation charges, net (5) (30) — (35) Insurance recoveries (6) 16 — — Argentina currency devaluation losses (7) (20) — — Expenses incurred due to natural disasters (8) — — (17) Change in allowance for doubtful accounts related to COVID-19 — — 14 Income from legal settlements — — 22 Asbestos-related claims reserve adjustment (9) — — 133 Total Income before income taxes $1,748 $1,381 $1,815 ($ in millions) 2023 2022 2021 Depreciation and amortization Performance Coatings $279 $296 $308 Industrial Coatings 213 207 212 Corporate / Non-Segment Items 66 51 41 Total $558 $554 $561 Share of net earnings of equity affiliates Performance Coatings $7 $7 $5 Industrial Coatings 1 — — Corporate / Non-Segment Items 13 18 10 Total $21 $25 $15 Segment assets (10) Performance Coatings $13,434 $13,088 $13,395 Industrial Coatings 5,643 5,802 5,807 Corporate / Non-Segment Items 2,570 1,854 2,149 Total $21,647 $20,744 $21,351 Investment in equity affiliates Performance Coatings $48 $42 $33 Industrial Coatings 18 15 15 Corporate / Non-Segment Items 75 77 78 Total $141 $134 $126 Expenditures for property (including business acquisitions) Performance Coatings $343 $254 $1,698 Industrial Coatings 184 313 784 Corporate / Non-Segment Items 131 65 26 Total $658 $632 $2,508 ($ in millions) 2023 2022 2021 Geographic Information Segment income United States and Canada $1,048 $819 $865 EMEA 679 505 612 Asia Pacific 430 332 354 Latin America 518 386 340 Total $2,675 $2,042 $2,171 Property, plant and equipment — net United States and Canada $1,559 $1,394 $1,377 EMEA 1,010 943 1,069 Asia Pacific 718 685 702 Latin America 357 306 294 Total $3,644 $3,328 $3,442 (1) In the fourth quarter 2023, the company recorded impairment and other related charges due to goodwill impairment recognized for the traffic solutions reporting unit as a result of its annual goodwill impairment test. The fair value of the traffic solutions reporting unit decreased primarily due to increases in the cost of capital (discount rate assumption) and declines in the reporting unit’s long-term forecast driven by challenges at its operations in Argentina due to the highly inflationary environment and changes to the reporting unit’s global footprint, including the fourth quarter 2023 divestiture of its European and Australian businesses. In 2022, the company recorded impairment and other related charges due to the wind down of the company's operation in Russia. In 2021, impairment charges were recorded for the write-down of certain assets related to the previously planned sale of certain smaller entities in non-strategic regions. (2) Business restructuring-related costs, net include business restructuring charges, offset by releases related to previously approved programs, which are included in Other charges/(income), net on the consolidated statement of income, accelerated depreciation of certain assets, which is included in Depreciation on the consolidated statement of income, and other restructuring-related costs, which are included in Cost of sales, exclusive of depreciation and amortization and Selling, general and administrative on the consolidated statement of income. Additionally, there was a $34 million gain on the sale of certain assets in 2021 in connection with the Company’s manufacturing footprint consolidation plans and associated restructuring programs. This gain is included in Other (income)/charges, net in the consolidated statement of income. (3) Portfolio optimization includes losses on the sale of non-core assets, including the losses recognized on the sales of the Company's European and Australian traffic solutions businesses in 2023, which are included in Other charges/(income), net in the consolidated statement of income, accelerated amortization expense recognized in 2023 related to the exit of a non-core business, which is included in Amortization in the consolidated statement of income, and the impact for the step up to fair value of inventory acquired in certain acquisitions, which is included in Cost of sales, exclusive of depreciation and amortization in the consolidated statement of income. Portfolio optimization also includes advisory, legal, accounting, valuation, other professional or consulting fees, and certain internal costs directly incurred to effect acquisitions, as well as similar fees and other costs to effect divestitures and other portfolio optimization exit actions. These costs are included in Selling, general and administrative expense in the consolidated statement of income. (4) In the first quarter 2023, PPG purchased group annuity contracts that transferred pension benefit obligations for certain of the company’s retirees in the U.S. to third-party insurance companies, resulting in a non-cash pension settlement charge. In 2021, the Company purchased group annuity contracts that transferred pension benefit obligations for certain of the Company’s retirees in Canada to a third-party insurance company. (5) Environmental remediation charges represent environmental remediation costs at certain legacy PPG manufacturing sites. These charges are included in Other charges/(income), net in the consolidated statement of income. (6) In the first quarter 2023, the company received reimbursement under its insurance policies for damages incurred at a southern U.S. factory from a winter storm in 2020. In the fourth quarter 2023, the company received reimbursement for a previously approved insurance claim under a policy covering legacy asbestos-related matters. These insurance recoveries are included in Other charges/(income), net in the consolidated statement of income. (7) In December 2023, the central bank of Argentina adjusted the official foreign currency exchange rate for the Argentine peso, significantly devaluing the currency relative to the United States dollar. Argentina currency devaluation losses represent foreign currency translation losses recognized during December 2023 related to the devaluation of the Argentine peso, which is included in Other charges/(income), net in the consolidated statement of income. (8) In early 2021, a winter storm damaged certain company factories in the southern U.S. Incremental expenses incurred due to these storms included costs related to maintenance and repairs of damaged property, freight and utility premiums and other incremental expenses directly related to the impacted areas. These incremental expenses are included in Other charges/(income), net in the consolidated statement of income. (9) In 2021, the reserve for asbestos-related claims was reduced to reflect the Company’s current estimate of potential liability for these claims. (10) Segment assets are the total assets used in the operation of each segment. Corporate assets principally include amounts recorded in Cash and cash equivalents, Deferred income taxes, and Property, plant and equipment, net on the consolidated balance sheet.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2023
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation The accompanying consolidated financial statements include the accounts of PPG Industries, Inc. (“PPG” or the “Company”) and all subsidiaries, both U.S. and non-U.S., that it controls. PPG owns more than 50% of the voting stock of most of the subsidiaries that it controls. For those consolidated subsidiaries in which the Company’s ownership is less than 100%, the outside shareholders’ interests are shown as noncontrolling interests. Investments in companies in which PPG owns 20% to 50% of the voting stock and has the ability to exercise significant influence over operating and financial policies of the investee are accounted for using the equity method of accounting. As a result, PPG’s share of income or losses from such equity affiliates is included in the consolidated statement of income and PPG’s share of these companies’ shareholders’ equity is included in Investments on the consolidated balance sheet. Transactions between PPG and its subsidiaries are eliminated in consolidation.
Use of Estimates in the Preparation of Financial Statements	Use of Estimates in the Preparation of Financial Statements
Revenue Recognition	Revenue Recognition Revenue is recognized as performance obligations with the customer are satisfied, at an amount that is determined to be collectible. For the sale of products, this generally occurs at the point in time when control of the Company’s products transfers to the customer based on the agreed upon shipping terms. Shipping and Handling Costs Amounts billed to customers for shipping and handling are reported in Net sales in the consolidated statement of income. Shipping and handling costs incurred by the Company for the delivery of goods to customers are included in Cost of sales, exclusive of depreciation and amortization in the consolidated statement of income. The Company recognizes revenue when control of the promised goods or services is transferred to the customer and in amounts that the Company expects to collect. The timing of revenue recognition takes into consideration the various shipping terms applicable to the Company’s sales. For most transactions, control passes in accordance with agreed upon delivery terms. The Company delivers products to company-owned stores, home centers and other regional or national consumer retail outlets, paint dealers, concessionaires and independent distributors, company-owned distribution networks, and directly to manufacturing companies and retail customers. Each product delivered to a third party customer is considered to satisfy a performance obligation. Performance obligations generally occur at a point in time and are satisfied when control of the goods passes to the customer. The Company is entitled to collection of the sales price under normal credit terms in the regions in which it operates. Accounts receivable are recognized when there is an unconditional right to consideration. Payment terms vary from customer to customer, depending on creditworthiness, prior payment history and other considerations. The Company also provides services by applying coatings to customers' manufactured parts and assembled products and by providing technical support to certain customers. Performance obligations are satisfied over time as critical milestones are met and as services are provided. PPG is entitled to payment as the services are rendered. For the years ended December 31, 2023, 2022 and 2021, service revenue constituted less than 5% of total revenue.
Selling, General and Administrative Costs	Selling, General and Administrative Costs
Advertising Costs	Advertising Costs
Research and Development	Research and Development
Legal Costs	Legal Costs Legal costs, which primarily include costs associated with acquisition and divestiture transactions, general litigation, environmental regulation compliance, patent and trademark protection and other general corporate purposes, are charged to expense as incurred.
Income Taxes	Income Taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to operating losses and tax credit carryforwards as well as differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in Income tax expense in the consolidated statement of income in the period that includes the enactment date. A valuation allowance is provided against deferred tax assets in situations where PPG determines it is more likely than not such assets will not ultimately be realized. PPG does not recognize a tax benefit unless it concludes that it is more likely than not that the benefit will be sustained on audit by the taxing authority based solely on the technical merits of the associated tax position. If the recognition threshold is met, PPG recognizes a tax benefit measured at the largest amount of the tax benefit that, in PPG’s judgment, is greater than 50 percent likely to be realized. PPG records interest and penalties related to uncertain tax positions in Income tax expense in the consolidated statement of income.
Foreign Currency Translation	Foreign Currency Translation The functional currency of most significant non-U.S. operations is their local currency. Assets and liabilities of those operations are translated into U.S. dollars using year-end exchange rates; income and expenses are translated using the average exchange rates for the reporting period. Unrealized foreign currency translation gains and losses are deferred in Accumulated other comprehensive loss on the consolidated balance sheet.
Cash Equivalents	Cash Equivalents Cash equivalents are highly liquid investments (valued at cost, which approximates fair value) acquired with an original maturity of three months or less.
Short-term Investments	Short-term Investments Short-term investments are highly liquid, high credit quality investments (valued at cost plus accrued interest) that have stated maturities of greater than three months to less than one year. The purchases and sales of these investments are classified as Investing activities in the consolidated statement of cash flows.
Marketable Equity Securities	Marketable Equity Securities The Company’s investment in marketable equity securities is recorded at fair market value and reported as Other current assets and Investments on the consolidated balance sheet with changes in fair market value recorded in income.
Inventories	Inventories
Derivative Financial Instruments	Derivative Financial Instruments The Company recognizes all derivative financial instruments (a “derivative”) as either assets or liabilities at fair value on the consolidated balance sheet. The accounting for changes in the fair value of a derivative depends on the use of the instrument. For derivative instruments that are designated and qualify as cash flow hedges, the unrealized gains or losses on the derivatives are recorded in the consolidated statement of comprehensive income. Amounts in Accumulated other comprehensive loss on the consolidated balance sheet are reclassified into Income before income taxes in the consolidated statement of income in the same period or periods during which the hedged transactions are recorded in Income before income taxes in the consolidated statement of income. For derivative instruments that are designated and qualify as fair value hedges, the change in the fair value of the derivatives are reported in Income before income taxes in the consolidated statement of income, offsetting the gain or loss recognized for the change in fair value of the asset, liability, or firm commitment that is being hedged. For derivatives, debt or other financial instruments that are designated and qualify as net investment hedges, the gains or losses associated with the financial instruments are reported as translation gains or losses in Accumulated other comprehensive loss on the consolidated balance sheet. Gains and losses in Accumulated other comprehensive loss related to hedges of the Company’s net investments in foreign operations are reclassified out of Accumulated other comprehensive loss and recognized in Income before income taxes in the consolidated statement of income upon a substantial liquidation, sale or partial sale of such investments or upon impairment of all or a portion of such investments. The cash flow impact of these instruments is classified as Investing activities in the consolidated statement of cash flows. Changes in the fair value of derivative instruments not designated as hedges for hedge accounting purposes are recognized in Income before income taxes in the consolidated statement of income in the period of change.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment is recorded at cost. Depreciation is computed on a straight-line method based on the estimated useful lives of related assets. Accelerated depreciation expense is recorded when facilities or equipment are subject to abnormal economic conditions, restructuring actions or obsolescence.
Goodwill and Identifiable Intangible Assets	Goodwill and Identifiable Intangible Assets Goodwill represents the excess of the cost over the fair value of acquired identifiable tangible and intangible assets less liabilities assumed from acquired businesses. Identifiable intangible assets acquired in business combinations are recorded based upon their fair value at the date of acquisition. PPG is a multinational manufacturer with 10 operating segments (which the Company refers to as “strategic business units”) that are organized based on the Company’s major products lines. These operating segments are also the Company’s reporting units for purposes of testing goodwill for impairment, which is tested at least annually in connection with PPG’s strategic planning process or more frequently if an indication of impairment exists. The Company tests goodwill for impairment by either performing a qualitative evaluation or a quantitative test. The qualitative evaluation is an assessment of factors, including reporting unit specific operating results as well as industry, market and general economic conditions, to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount, including goodwill. The Company may elect to bypass this qualitative assessment for some or all of its reporting units and perform a quantitative test. Quantitative goodwill impairment testing, if deemed necessary, is performed during the fourth quarter of each year by comparing the estimated fair value of an associated reporting unit as of September 30 to its carrying value. Fair value is estimated using a discounted cash flow model. Key assumptions and estimates used in the discounted cash flow model include projected future revenues, discount rates, operating cash flows, capital expenditures and tax rates. In 2023, the Company determined that the estimated fair value of the traffic solutions reporting unit was less than its carrying value, resulting in recognition of a goodwill impairment charge of $158 million in Impairment and other related charges, net in the accompanying consolidated statement of income. Refer to Note 6, “Goodwill and Other Identifiable Intangible Assets” for further details. The Company has determined that certain acquired trademarks have indefinite useful lives. The Company tests the carrying value of these trademarks for impairment at least annually, or as needed whenever events and circumstances indicate that their carrying amount may not be recoverable. In 2022, due to the adverse economic impacts of Russian military forces invading Ukraine, the Company identified indicators that the carrying value of an indefinite-lived intangible asset and certain definite-lived intangible assets associated with the Company's operations in Russia may not be recoverable, and the carrying value of those assets was assessed for impairment. As a result of this assessment, the Company recorded impairment charges of $124 million related to the indefinite-lived intangible asset and $23 million related to definite-lived intangible assets in the consolidated statement of income for the year ended December 31, 2022. Refer to Note 7, "Impairment and Other Related Charges, Net" for additional information. The annual indefinite-lived intangible asset impairment assessment takes place in the fourth quarter of each year either by completing a qualitative assessment or quantitatively by comparing the estimated fair value of each trademark as of September 30 to its carrying value. Fair value is estimated using the relief from royalty method (a discounted cash flow methodology). The qualitative assessment includes consideration of factors, including revenue relative to the asset being assessed, the operating results of the related business and industry, market and general economic conditions, to determine whether it is more likely than not that the fair value of the asset is less than its carrying amount. In 2023, the annual impairment testing review of indefinite-lived intangibles performed as of September 30, 2023 resulted in the Company recognizing an impairment charge of $2 million. Refer to Note 6, “Goodwill and Other Identifiable Intangible Assets” for further details. Identifiable intangible assets with finite lives are amortized on a straight-line basis over their estimated useful lives (1 to 30 years) and are reviewed for impairment whenever events or circumstances indicate that their carrying amount may not be recoverable.
Receivables and Allowances	Receivables and Allowances All trade receivables are reported on the consolidated balance sheet at the outstanding principal adjusted for any allowance for doubtful accounts and any charge offs. The Company provides an allowance for doubtful accounts to
Leases	Leases The Company determines if a contract is a lease at the inception of the arrangement. The Company reviews all options to extend, terminate, or purchase its right of use assets at the inception of the lease and accounts for these options when they are reasonably certain of being exercised. Certain real estate leases contain lease and non-lease components, which are accounted for separately. For certain equipment leases, lease and non-lease components are accounted for as a single lease component. Leases with an initial term of 12 months or less are not recorded on the consolidated balance sheet. Lease expense for these leases is recognized on a straight-line basis over the lease term. Variable lease expense is based on contractual arrangements with PPG’s lessors determined based on external indices or other relevant market factors. In addition, PPG’s variable lease expense also includes elements of a contract that do not represent a good or service but for which the lessee is responsible for paying.
Product Warranties	Product Warranties The Company accrues for product warranties at the time the associated products are sold based on historical claims experience. The reserve, pretax charges against income and cash outlays for product warranties were not significant to the consolidated financial statements of the Company for any year presented.
Asset Retirement Obligations	Asset Retirement Obligations An asset retirement obligation represents a legal obligation associated with the retirement of a tangible long-lived asset that is incurred upon the acquisition, construction, development or normal operation of that long-lived asset. PPG recognizes asset retirement obligations in the period in which they are incurred if a reasonable estimate of fair value can be made. The asset retirement obligation is subsequently adjusted for changes in fair value. The associated estimated asset retirement costs are capitalized as part of the carrying amount of the long-lived asset and depreciated over its useful life. PPG’s asset retirement obligations are primarily associated with the retirement or closure of certain assets used in PPG’s manufacturing process. The accrued asset retirement obligation is recorded in Accounts payable and accrued liabilities and Other liabilities on the consolidated balance sheet and was $23 million as of both December 31, 2023 and 2022. PPG’s only conditional asset retirement obligation relates to the possible future abatement of asbestos contained in certain PPG production facilities. The asbestos in PPG’s production facilities arises from the application of normal and customary building practices in the past when the facilities were constructed. This asbestos is encapsulated in place and, as a result, there is no current legal requirement to abate it. Because there is no requirement to abate, the Company does not have any current plans or an intention to abate and therefore the timing, method and cost of future abatement, if any, are not known. The Company has not recorded an asset retirement obligation associated with asbestos abatement, given the uncertainty concerning the timing of future abatement, if any.
Environmental Contingencies	Environmental Contingencies
Assets and Liabilities Held for Sale	Assets and Liabilities Held for Sale The Company classifies assets and liabilities as held for sale (a “disposal group”) when management commits to a plan to sell the disposal group, the sale is probable within one year and the disposal group is available for immediate sale in its present condition. The Company considers various factors, particularly whether actions required to complete the plan indicate it is unlikely that significant changes to the plan will be made or the plan will be withdrawn. Assets held for sale are measured at the lower of carrying value or fair value less costs to sell. Any loss resulting from the measurement is recognized in the period the held-for-sale criteria are met. Conversely, gains are not recognized until the date of the sale. When the disposal group is classified as held for sale, depreciation and amortization ceases and the Company tests the assets for impairment.
Reclassifications	Reclassifications Certain reclassifications of prior years’ data have been made to conform to the current year presentation. These reclassifications had no impact on our previously reported Net income, cash flows or shareholders’ equity.
New Accounting Standards	Accounting Standards Adopted in 2023 Effective January 1, 2023, PPG adopted Accounting Standards Update ("ASU") No. 2022-04, “Liabilities - Supplier Finance Programs." This ASU is intended to enhance the transparency surrounding the use of supplier finance programs. The guidance does not affect the recognition, measurement, or financial statement presentation of obligations covered by supplier finance programs. Accounting Standards to be Adopted in Future Years In November 2023, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2023-07 “Improvements to Reportable Segment Disclosures (Topic 280)”. This ASU updates current reportable segment disclosure requirements to require disclosures of significant reportable segment expenses that are regularly provided to the Chief Operating Decision Maker (“CODM”) and included within each reported measure of a segment's profit or loss. This ASU also requires disclosure of the title and position of the individual identified as the CODM and an explanation of how the CODM uses the reported measures of a segment’s profit or loss in assessing segment performance and deciding how to allocate resources. This ASU will be effective for the annual period ending December 31, 2024. Adoption of this ASU will result in additional disclosure, but will not impact PPG’s consolidated financial position, results of operations or cash flows. In December 2023, the FASB issued ASU No. 2023-09 “Improvements to Income Tax Disclosures (Topic 740)”. This ASU updates current income tax disclosure requirements to require disclosures of specific categories of information within the effective tax rate reconciliation, as well as disclosure of income taxes paid disaggregated by jurisdiction. This ASU will be effective for the annual period ending December 31, 2025. Adoption of this ASU will result in additional disclosure, but will not impact PPG’s consolidated financial position, results of operations or cash flows.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2023
Accounting Policies [Abstract]
Research and Development	($ in millions) 2023 2022 2021 Research and development – total $456 $470 $463 Less: depreciation on research facilities 23 22 24 Research and development, net $433 $448 $439

Working Capital Detail (Tables)

Working Capital Detail (Tables)	12 Months Ended
	Dec. 31, 2023
Disclosure Components Of Working Capital Detail [Abstract]
Components of Working Capital Detail	Working Capital Detail ($ in millions) 2023 2022 Receivables Trade - net $2,881 $2,824 Other - net 398 479 Total $3,279 $3,303 Inventories (1) Finished products $1,197 $1,209 Work in process 236 238 Raw materials 640 784 Supplies 54 41 Total $2,127 $2,272 Accounts payable and accrued liabilities Trade $2,612 $2,538 Accrued payroll 674 501 Customer rebates 414 377 Other postretirement and pension benefits 96 77 Income taxes 128 37 Other 543 557 Total $4,467 $4,087 (1) Inventories valued using the LIFO method of inventory valuation comprised 20% and 21% of total gross inventory values as of December 31, 2023 and 2022, respectively. If the FIFO method of inventory valuation had been used, inventories would have been $249 million and $272 million higher as of December 31, 2023 and 2022, respectively.

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment ($ in millions) Useful Lives (years) 2023 2022 Land and land improvements 1-30 $572 $548 Buildings 20-40 1,908 1,774 Machinery and equipment 5-25 4,157 3,960 Other 3-20 1,287 1,203 Construction in progress 683 492 Total $8,607 $7,977 Less: accumulated depreciation 4,963 4,649 Net $3,644 $3,328

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2023
Equity Method Investments and Joint Ventures [Abstract]
Investments	($ in millions) 2023 2022 Investments in equity affiliates $141 $134 Marketable equity securities (See Note 11) 74 61 Other 44 49 Total $259 $244

Goodwill and Other Identifiab_2

Goodwill and Other Identifiable Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Carrying Amount of Goodwill Attributable to Each Reportable Segment	Goodwill ($ in millions) Performance Coatings Industrial Coatings Total January 1, 2022 $5,034 $1,214 $6,248 Acquisitions, including purchase accounting adjustments 31 15 46 Divestitures (40) — (40) Foreign currency impact (144) (32) (176) December 31, 2022 $4,881 $1,197 $6,078 Acquisitions, including purchase accounting adjustments 126 13 139 Divestitures (5) — (5) Foreign currency impact 150 (4) 146 Goodwill impairment (158) — (158) December 31, 2023 $4,994 $1,206 $6,200 In the fourth quarter, the Company tests the carrying value of goodwill for impairment, as discussed in Note 1. “Summary of Significant Accounting Policies.” Based on the annual goodwill impairment test performed in the fourth quarter 2023, the Company determined that the estimated fair value of the traffic solutions reporting unit was less than its carrying value, resulting in recognition of a goodwill impairment charge of $158 million in Impairment and other related charges, net in the accompanying consolidated statements of income. After recording the goodwill impairment charge of $158 million, the remaining goodwill balance recorded for the traffic solutions reporting unit was $391 million as of December 31, 2023. The fair value of the traffic solutions reporting unit was estimated using a discounted cash flow model. Key assumptions and estimates used in the discounted cash flow model included projected future revenues, a discount rate, operating cash flows, capital expenditures, and a tax rate. The decline in the fair value of the traffic solutions reporting unit compared to prior periods was primarily due to an increase in the weighted average cost of capital (discount rate assumption) reflecting the current interest rate environment. In addition, the fair value was impacted by a decline in the reporting unit’s long-term cash generation forecast due to the highly inflationary environment in Argentina and the fourth quarter 2023 divestitures of its European and Australian businesses. In 2022 and 2021, the annual impairment testing of goodwill did not result in impairment of any of the Company’s reporting units. As of December 31, 2023, accumulated goodwill impairment losses totaled $158 million.
Identifiable Intangible Assets with Finite Lives	Identifiable Intangible Assets December 31, 2023 December 31, 2022 ($ in millions) Gross Carrying Amount Accumulated Amortization Net Gross Carrying Amount Accumulated Amortization Net Indefinite-Lived Identifiable Intangible Assets Trademarks $1,442 $— $1,442 $1,325 $— $1,325 Definite-Lived Identifiable Intangible Assets Acquired technology $845 ($678) $167 $827 ($636) $191 Customer-related 1,933 (1,259) 674 1,855 (1,112) 743 Trade names 319 (180) 139 311 (158) 153 Other 50 (48) 2 50 (48) 2 Total Definite Lived Intangible Assets $3,147 ($2,165) $982 $3,043 ($1,954) $1,089 Total Identifiable Intangible Assets $4,589 ($2,165) $2,424 $4,368 ($1,954) $2,414 In the fourth quarter, the Company tests the carrying value of indefinite-lived trademarks for impairment, as discussed in Note 1, “Summary of Significant Accounting Policies.” In conjunction with both the 2023 and 2022 annual impairment tests, the Company determined that the estimated fair value of certain trademarks in the Performance Coatings segment was less than the carrying value, resulting in recognition of impairment charges of $2 million and $4 million, respectively, in Impairment and other related charges, net in the accompanying consolidated statement of income. In 2021, the annual impairment testing review of indefinite-lived intangibles did not result in an impairment.
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	($ in millions) 2024 2025 2026 2027 2028 Estimated future amortization expense $147 $128 $107 $96 $83

Business Restructuring (Tables)

Business Restructuring (Tables)	12 Months Ended
	Dec. 31, 2023
Restructuring and Related Activities [Abstract]
Activity Related to Restructuring Reserves	The following table summarizes restructuring reserve activity for the years ended December 31, 2023 and 2022: Total Reserve ($ in millions) 2023 2022 January 1 $169 $231 Approved restructuring actions 33 84 Release of prior reserves and other adjustments (a) (35) (51) Cash payments (57) (85) Foreign currency impact 3 (10) December 31 $113 $169 (a) Certain releases were recorded to reflect the current estimate of costs to complete planned business restructuring actions.

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2023
Leases [Abstract]
Schedule of Components of Lease Expense	The components of lease expense for the years ended December 31, 2023, 2022 and 2021 were as follows: ($ in millions) Classification in the Consolidated Statement of Income 2023 2022 2021 Operating lease cost Cost of sales, exclusive of depreciation and amortization $46 $43 $41 Operating lease cost Selling, general and administrative 220 216 219 Total operating lease cost $266 $259 $260 Finance lease cost: Amortization of right-of-use assets Depreciation $2 $2 $2 Interest on lease liabilities Interest expense 1 1 1 Total finance lease cost $3 $3 $3 Total lease cost $269 $262 $263 Total operating lease cost for the years ended December 31, 2023, 2022 and 2021 is inclusive of the following: ($ in millions) 2023 2022 2021 Variable lease costs $20 $18 $18 Short-term lease costs $20 $22 $16
Schedule of Classification on the Condensed Consolidated Balance Sheet	($ in millions) Classification on the Consolidated Balance Sheet 2023 2022 Assets: Operating Operating lease right-of-use assets $832 $829 Finance (1) Property, plant, and equipment, net 14 15 Total leased assets $846 $844 Liabilities: Current Operating Current portion of operating lease liabilities $194 $183 Finance Short-term debt and current portion of long-term debt 2 3 Noncurrent Operating Operating lease liabilities $622 $636 Finance Long-term debt 6 7 Total lease liabilities $824 $829 (1) Net of accumulated depreciation of $15 million and $14 million as of December 31, 2023 and 2022, respectively.
Schedule of Cash Paid for Lease Liabilities and Right-of-Use Assets Obtained in Exchange for Lease Obligations	($ in millions) 2023 2022 2021 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows paid for operating leases $224 $218 $224 Operating cash flows paid for finance leases $1 $1 $1 Financing cash flows paid for finance leases $3 $2 $3 Right-of-use assets obtained in exchange for lease obligations: Operating leases $174 $161 $253 Finance leases $1 $3 $— Lease terms and discount rates as of December 31, 2023, 2022 and 2021 were as follows:
Schedule of Weighted-Average Remaining Lease Term and Weighted-Average Discount Rate	2023 2022 2021 Weighted-average remaining lease term (in years) Operating leases 6.2 6.7 7.1 Finance leases 9.5 9.0 6.4 Weighted-average discount rate Operating leases 3.2 % 2.6 % 2.1 % Finance leases 5.9 % 5.7 % 5.8 %
Schedule of Maturities of Lease Liabilities, Operating Lease	As of December 31, 2023, maturities of lease liabilities were as follows: ($ in millions) Operating Leases Finance Leases 2024 $216 $2 2025 176 2 2026 137 2 2027 103 1 2028 80 1 Thereafter 184 1 Total lease payments $896 $9 Less: Interest 80 1 Total lease obligations $816 $8
Schedule of Maturities of Lease Liabilities, Finance Lease	As of December 31, 2023, maturities of lease liabilities were as follows: ($ in millions) Operating Leases Finance Leases 2024 $216 $2 2025 176 2 2026 137 2 2027 103 1 2028 80 1 Thereafter 184 1 Total lease payments $896 $9 Less: Interest 80 1 Total lease obligations $816 $8

Borrowings and Lines of Credit

Borrowings and Lines of Credit (Tables)	12 Months Ended
	Dec. 31, 2023
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	Long-term Debt Obligations ($ in millions) Maturity Date 2023 2022 3.2% notes ($300) (1) 2023 $— $300 Term Loan Credit Agreement, due 2024 ($1,400) 2024 — 1,099 2.4% notes ($300) 2024 299 299 0.875% notes (€600) 2025 660 639 1.875% notes (€300) 2025 330 319 1.2% notes ($700) 2026 696 694 Term Loan Credit Agreement, due 2026 (€500) 2026 552 — 1.4% notes (€600) 2027 659 638 3.75% notes ($800) (2) 2028 808 809 2.5% notes (€80) 2029 87 85 2.8% notes ($300) 2029 298 298 2.75% notes (€700) 2029 768 743 2.55% notes ($300) 2030 297 297 1.95% note (€50) 2037 54 52 7.7% notes ($176) 2038 174 174 5.5% notes ($250) 2040 247 247 3.0% notes (€120) 2044 126 122 Various other non-U.S. debt Various 1 1 Finance lease obligations Various 8 10 Impact of derivatives on debt (3) N/A (14) (20) Total $6,050 $6,806 Less payments due within one year N/A 302 303 Long-term debt $5,748 $6,503 (1) In February 2018, PPG entered into interest rate swaps which converted $150 million of the notes from a fixed interest rate to a floating interest rate based on the three month London Interbank Offered Rate (LIBOR). The impact of the derivative on the notes represents the fair value adjustment of the debt. The average effective interest rate for the portion of the notes impacted by the swaps was 5.1% and 2.2% for the years ended December 31, 2023 and 2022, respectively. In March 2023 the obligation was repaid and the associated interest rate swaps were settled. Refer to Note 11, “Financial Instruments, Hedging Activities and Fair Value Measurements” for additional information. (2) In February 2018, PPG entered into interest rate swaps which converted $375 million of the notes from a fixed interest rate to a floating interest rate based on the three month LIBOR. The impact of the derivative on the notes represents the fair value adjustment of the debt. The average effective interest rate for the portion of the notes impacted by the swaps was 6.2% and 2.6% for the years ended December 31, 2023 and 2022, respectively. Refer to Note 11, “Financial Instruments, Hedging Activities and Fair Value Measurements” for additional information. (3) Fair value adjustment of the 3.2% $300 million notes and 3.75% $800 million notes as a result of fair value hedge accounting treatment related to the outstanding interest rate swaps as of December 31, 2023 and 2022, respectively. In March 2023, the 3.2% $300 million notes were repaid and the associated interest rate swaps were settled. Refer to Note 11, “Financial Instruments, Hedging Activities and Fair Value Measurements” for additional information. Long-Term Debt ($ in millions) December 31, 2023 (a) December 31, 2022 (b) Long-term debt - carrying value $6,042 $6,796 Long-term debt - fair value $5,781 $6,375 (a) Excluding finance lease obligations of $8 million and short term borrowings of $4 million as of December 31, 2023. (b) Excluding finance lease obligations of $10 million and short term borrowings of $10 million as of December 31, 2022.
Schedule of Maturities of Long-term Debt	Long-term Debt Maturities ($ in millions) Maturity per year 2024 $302 2025 $989 2026 $1,250 2027 $662 2028 $784 Thereafter $2,063
Short-Term Debt Outstanding	Short-term Debt Obligations ($ in millions) 2023 2022 Various, weighted average 2.4% and 2.7% as of December 31, 2023 and 2022, respectively. $4 $10

Financial Instruments, Hedgin_2

Financial Instruments, Hedging Activities and Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value, Cash Flow and Net Investment Hedges	the years ended December 31, 2023, 2022 and 2021. All dollar amounts are shown on a pretax basis. 2023 2022 2021 ($ in millions) (Loss)/Gain Deferred in OCI (Loss)/Gain Recognized Gain Deferred in OCI Gain Recognized Gain Deferred in OCI Gain Recognized Caption in Consolidated Statement of Income Fair Value Interest rate swaps ($10) $8 $15 Interest expense Total Fair Value ($10) $8 $15 Net Investment Cross currency swaps ($15) $12 $38 $16 $53 $13 Interest expense Foreign denominated debt (89) — 85 — 173 — Total Net Investment ($104) $12 $123 $16 $226 $13 Economic Foreign currency forward contracts $49 $43 $23 Other charges/(income), net
Schedule of Derivative Liabilities at Fair Value	Assets and liabilities reported at fair value on a recurring basis December 31, 2023 December 31, 2022 ($ in millions) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Assets: Other current assets: Marketable equity securities $9 $— $— $9 $— $— Foreign currency forward contracts (a) — 28 — — 27 — Cross currency swaps (b) — 2 — — 39 — Investments: Marketable equity securities $74 $— $— $61 $— $— Other assets: Cross currency swaps (b) $— $31 $— $— $49 $— Liabilities: Accounts payable and accrued liabilities: Foreign currency forward contracts (a) $— $5 $— $— $3 $— Interest rate swaps (c) — — — — 1 — Other liabilities: Interest rate swaps (c) $— $14 $— $— $19 $— (a) Derivatives not designated as hedging instruments (b) Net investment hedges (c) Fair value hedges
Schedule of Long-term Debt Instruments	Long-term Debt Obligations ($ in millions) Maturity Date 2023 2022 3.2% notes ($300) (1) 2023 $— $300 Term Loan Credit Agreement, due 2024 ($1,400) 2024 — 1,099 2.4% notes ($300) 2024 299 299 0.875% notes (€600) 2025 660 639 1.875% notes (€300) 2025 330 319 1.2% notes ($700) 2026 696 694 Term Loan Credit Agreement, due 2026 (€500) 2026 552 — 1.4% notes (€600) 2027 659 638 3.75% notes ($800) (2) 2028 808 809 2.5% notes (€80) 2029 87 85 2.8% notes ($300) 2029 298 298 2.75% notes (€700) 2029 768 743 2.55% notes ($300) 2030 297 297 1.95% note (€50) 2037 54 52 7.7% notes ($176) 2038 174 174 5.5% notes ($250) 2040 247 247 3.0% notes (€120) 2044 126 122 Various other non-U.S. debt Various 1 1 Finance lease obligations Various 8 10 Impact of derivatives on debt (3) N/A (14) (20) Total $6,050 $6,806 Less payments due within one year N/A 302 303 Long-term debt $5,748 $6,503 (1) In February 2018, PPG entered into interest rate swaps which converted $150 million of the notes from a fixed interest rate to a floating interest rate based on the three month London Interbank Offered Rate (LIBOR). The impact of the derivative on the notes represents the fair value adjustment of the debt. The average effective interest rate for the portion of the notes impacted by the swaps was 5.1% and 2.2% for the years ended December 31, 2023 and 2022, respectively. In March 2023 the obligation was repaid and the associated interest rate swaps were settled. Refer to Note 11, “Financial Instruments, Hedging Activities and Fair Value Measurements” for additional information. (2) In February 2018, PPG entered into interest rate swaps which converted $375 million of the notes from a fixed interest rate to a floating interest rate based on the three month LIBOR. The impact of the derivative on the notes represents the fair value adjustment of the debt. The average effective interest rate for the portion of the notes impacted by the swaps was 6.2% and 2.6% for the years ended December 31, 2023 and 2022, respectively. Refer to Note 11, “Financial Instruments, Hedging Activities and Fair Value Measurements” for additional information. (3) Fair value adjustment of the 3.2% $300 million notes and 3.75% $800 million notes as a result of fair value hedge accounting treatment related to the outstanding interest rate swaps as of December 31, 2023 and 2022, respectively. In March 2023, the 3.2% $300 million notes were repaid and the associated interest rate swaps were settled. Refer to Note 11, “Financial Instruments, Hedging Activities and Fair Value Measurements” for additional information. Long-Term Debt ($ in millions) December 31, 2023 (a) December 31, 2022 (b) Long-term debt - carrying value $6,042 $6,796 Long-term debt - fair value $5,781 $6,375 (a) Excluding finance lease obligations of $8 million and short term borrowings of $4 million as of December 31, 2023. (b) Excluding finance lease obligations of $10 million and short term borrowings of $10 million as of December 31, 2022.

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2023
Earnings Per Share [Abstract]
Earnings Per Common Share Calculations	($ in millions, except per share amounts) 2023 2022 2021 Earnings per common share (attributable to PPG) Income from continuing operations, net of tax $1,270 $1,028 $1,420 (Loss)/income from discontinued operations, net of tax — (2) 19 Net income (attributable to PPG) $1,270 $1,026 $1,439 Weighted average common shares outstanding 236.0 236.1 237.6 Effect of dilutive securities: Stock options 0.5 0.5 1.0 Other stock compensation plans 0.7 0.7 0.8 Potentially dilutive common shares 1.2 1.2 1.8 Adjusted weighted average common shares outstanding 237.2 237.3 239.4 Earnings per common share (attributable to PPG) Income from continuing operations, net of tax $5.38 $4.35 $5.98 (Loss)/income from discontinued operations, net of tax — (0.01) 0.08 Net income (attributable to PPG) $5.38 $4.34 $6.06 Earnings per common share - assuming dilution (attributable to PPG) Income from continuing operations, net of tax $5.35 $4.33 $5.93 (Loss)/income from discontinued operations, net of tax — (0.01) 0.08 Net income (attributable to PPG) $5.35 $4.32 $6.01 Antidilutive securities (a) : Stock options 0.9 0.9 —

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Components of Income Tax Expense	The provision for income taxes by taxing jurisdiction and by significant components consisted of the following: ($ in millions) 2023 2022 2021 Current U.S. federal $102 $137 $25 U.S. state and local 16 20 13 Foreign 504 325 301 Total current income tax expense $622 $482 $339 Deferred U.S. federal ($153) ($79) $12 U.S. state and local (14) (7) 3 Foreign (16) (71) 20 Total deferred income tax (benefit)/expense ($183) ($157) $35 Total income tax expense $439 $325 $374
Reconciliation of Statutory U.S. Corporate Federal Income Tax Rate to Effective Income Tax Rate	A reconciliation of the statutory U.S. corporate federal income tax rate to the Company’s effective tax rate follows: 2023 2022 2021 U.S. federal income tax rate 21.0 % 21.0 % 21.0 % Changes in rate due to: Taxes on non-U.S. earnings 4.2 3.6 2.7 Change in valuation allowance reserves 3.4 0.6 — Other foreign tax effects (2.7) (1.6) (0.4) Impairment and other related charges, net 1.9 1.4 — Uncertain tax positions (1.7) (0.4) (1.4) U.S. tax benefit on foreign operations (0.9) (0.4) (1.6) U.S. tax incentives (0.8) (1.0) (0.6) Tax benefits from equity awards (0.2) (0.3) (0.3) U.S. state and local taxes — 0.7 0.8 Other 0.9 (0.1) 0.4 Effective income tax rate 25.1 % 23.5 % 20.6 %
Net deferred income tax assets and liabilities	($ in millions) 2023 2022 Deferred income tax assets related to Employee benefits $273 $275 Contingent and accrued liabilities 61 67 Operating loss and other carry-forwards 279 218 Operating lease liabilities 203 203 Research and development amortization 214 149 Other 201 168 Valuation allowance (249) (182) Total $982 $898 Deferred income tax liabilities related to Property $223 $223 Intangibles 696 720 Employee benefits 47 81 Operating lease right-of-use assets 207 206 Other 44 74 Total $1,217 $1,304 Deferred income tax liabilities – net ($235) ($406)
Summary of Operating Loss Carryforwards	($ in millions) 2023 2022 Expiration Available net operating loss carryforwards, tax effected: Indefinite expiration $86 $84 NA Definite expiration 72 66 2024-2043 Total $158 $150 Income tax credit carryforwards $108 $89 2024-2043
Unrecognized Tax Benefits	A reconciliation of the total amounts of unrecognized tax benefits (excluding interest and penalties) as of December 31 follows: ($ in millions) 2023 2022 2021 January 1 $145 $158 $175 Current year tax positions - additions 16 19 12 Prior year tax positions - additions 33 2 10 Prior year tax positions - reductions (14) (2) (2) Statute of limitations expirations (9) (23) (19) Settlements (51) (3) (21) Foreign currency translation 1 (6) 3 December 31 $121 $145 $158 Interest and penalties ($ in millions) 2023 2022 2021 Accrued interest and penalties related to unrecognized tax benefits $14 $17 $17 (Income)/loss recognized in income tax expense related to interest and penalties ($2) $1 ($2)

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2023
Changes in Projected Benefit Obligations, Plan Assets and Funded Status	The following table sets forth the changes in projected benefit obligations (“PBO”), plan assets, the funded status and the amounts recognized on the accompanying consolidated balance sheet for the Company’s defined benefit pension and other postretirement benefit plans: Defined Benefit Pension Plans United States International Total PPG ($ in millions) 2023 2022 2023 2022 2023 2022 Projected benefit obligation, January 1 $1,425 $1,920 $961 $1,614 $2,386 $3,534 Service cost — — 7 9 7 9 Interest cost 62 45 49 28 111 73 Actuarial losses/(gains) 44 (449) 75 (485) 119 (934) Benefits paid (79) (91) (50) (49) (129) (140) Foreign currency translation adjustments — — 47 (126) 47 (126) Settlements (309) — (11) (22) (320) (22) Other — — (5) (8) (5) (8) Projected benefit obligation, December 31 $1,143 $1,425 $1,073 $961 $2,216 $2,386 Market value of plan assets, January 1 $1,028 $1,329 $946 $1,646 $1,974 $2,975 Actual return on plan assets 45 (228) 43 (506) 88 (734) Company contributions 28 — 18 11 46 11 Benefits paid (61) (73) (40) (41) (101) (114) Plan settlements (309) — (11) (22) (320) (22) Foreign currency translation adjustments — — 45 (140) 45 (140) Other — — (3) (2) (3) (2) Market value of plan assets, December 31 $731 $1,028 $998 $946 $1,729 $1,974 Funded Status ($412) ($397) ($75) ($15) ($487) ($412) Amounts recognized in the Consolidated Balance Sheet: Other assets (long-term) — — 152 183 152 183 Accounts payable and accrued liabilities (38) (17) (13) (12) (51) (29) Accrued pensions (374) (380) (214) (186) (588) (566) Net liability recognized ($412) ($397) ($75) ($15) ($487) ($412) Other Postretirement Benefit Plans United States International Total PPG ($ in millions) 2023 2022 2023 2022 2023 2022 Projected benefit obligation, January 1 $458 $631 $66 $93 $524 $724 Service cost 4 8 — — 4 8 Interest cost 23 13 4 3 27 16 Plan amendments (17) — — — (17) — Actuarial (gains)/losses (3) (154) 3 (20) — (174) Benefits paid (39) (40) (3) (4) (42) (44) Foreign currency translation adjustments — — 1 (6) 1 (6) Curtailments (2) — — — (2) — Projected benefit obligation, December 31 $424 $458 $71 $66 $495 $524 Amounts recognized in the Consolidated Balance Sheet: Accounts payable and accrued liabilities (41) (44) (4) (4) (45) (48) Other postretirement benefits (383) (414) (67) (62) (450) (476) Net liability recognized ($424) ($458) ($71) ($66) ($495) ($524) The PBO is the actuarial present value of benefits attributable to employee service rendered to date, including the effects of estimated future pay increases. The accumulated benefit obligation (“ABO”) is the actuarial present value of benefits attributable to employee service rendered to date, but does not include the effects of estimated future pay increases. The ABO for all defined benefit pension plans as of December 31, 2023 and 2022 was $2.2 billion and $2.3 billion, respectively. The following table details the pension plans where the benefit liability exceeds the fair value of the plan assets: Pensions ($ in millions) 2023 2022 Plans with PBO in Excess of Plan Assets: Projected benefit obligation $1,426 $1,863 Fair value of plan assets $771 $1,270 Plans with ABO in Excess of Plan Assets: Accumulated benefit obligation $1,366 $1,833 Fair value of plan assets $737 $1,266
Accumulated Other Comprehensive Loss Pretax Amounts Not Yet Reflected in Net Periodic Benefit Cost	Pensions Other Postretirement Benefits ($ in millions) 2023 2022 2023 2022 Accumulated net actuarial losses/(gains) $682 $748 ($15) ($16) Accumulated prior service credit — — (20) (10) Total $682 $748 ($35) ($26)
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]	The net decrease in Accumulated other comprehensive loss (pretax) related to defined benefit pension and other postretirement benefit plans during the year ended December 31, 2023 was due to the following: ($ in millions) Pensions Other Postretirement Benefits Net actuarial loss arising during the year $141 $— Plan amendment — (17) Amortization of actuarial loss/(gain) (21) 1 Amortization of prior service credit — 7 Foreign currency translation adjustments 8 — Impact of settlements (194) — Net decrease ($66) ($9)
Net Periodic Benefit Cost	Pensions Other Postretirement Benefits ($ in millions) 2023 2022 2021 2023 2022 2021 Service cost $7 $9 $9 $4 $8 $12 Interest cost 111 73 65 27 16 14 Expected return on plan assets (110) (140) (152) — — — Amortization of prior service credit — — — (7) (11) (54) Amortization of actuarial losses/(gains) 21 34 39 (1) 12 20 Settlements, curtailments, and special termination benefits 192 6 53 (2) — — Net periodic benefit cost/(income) $221 ($18) $14 $21 $25 ($8)
Schedule of Contributions to Defined benefit Plans	Contributions to defined benefit pension plans ($ in millions) 2023 2022 2021 U.S. defined benefit pension plans $28 $— $— Non-U.S. defined benefit pension plans $18 $11 $10
Schedule of Expected Benefit Payments	The estimated benefits expected to be paid under the Company’s defined benefit pension and other postretirement benefit plans are: ($ in millions) Pensions Other Postretirement Benefits 2024 $152 $45 2025 $137 $44 2026 $140 $41 2027 $145 $40 2028 $146 $40 2029 to 2033 $775 $177
Weighted Average Target Pension Plan Asset Allocations	The following summarizes the weighted average target pension plan asset allocation as of December 31, 2023 and 2022 for all PPG defined benefit plans: Asset Category 2023 2022 Equity securities 15-45% 15-45% Debt securities 30-65% 30-65% Real estate 0-10% 0-10% Other 20-40% 20-40%
Fair Values of the Company's Pension Plan Assets by Asset Category	The fair values of the Company’s pension plan assets at December 31, 2023 and 2022, by asset category, are as follows: December 31, 2023 December 31, 2022 ($ in millions) Level 1 (1) Level 2 (1) Level 3 (1) Total Level 1 (1) Level 2 (1) Level 3 (1) Total Asset Category Equity securities: U.S. Large cap $65 $55 $— $120 $66 $43 $— $109 Small cap 16 — — 16 25 — — 25 Non-U.S. Developed and emerging markets (2) 96 43 — 139 99 43 — 142 Debt securities: Cash and cash equivalents 22 41 — 63 7 47 — 54 Corporate (3) U.S. (4) — 1 — 1 — 168 80 248 Developed and emerging markets (2) — — — — — 1 — 1 Diversified (5) — — — — — 13 — 13 Government U.S. (4) — — — — 49 10 — 59 Developed and emerging markets (2) — 1 — 1 — 6 — 6 Other (6) — — 258 258 — — 235 235 Real estate, hedge funds, and other — 306 341 647 — 275 362 637 Total assets in the fair value hierarchy $199 $447 $599 $1,245 $246 $606 $677 $1,529 Common-collective trusts (7) — — — 484 — — — 445 Total Investments $199 $447 $599 $1,729 $246 $606 $677 $1,974 (1) These levels refer to the accounting guidance on fair value measurement described in Note 11, “Financial Instruments, Hedging Activities and Fair Value Measurements.” (2) This category represents holdings in investment grade debt or equity securities of issuers in both developed markets and emerging economies. (3) This category represents investment grade debt securities from a diverse set of industry issuers. (4) This category primarily represents long duration fixed income securities. (5) This category represents commingled funds invested in diverse portfolios of debt securities. (6) This category primarily represents insurance contracts. (7) Certain investments that are measured at net asset value per share (or its equivalent) are not required to be classified in the fair value hierarchy.
Change in the Fair Value of the Company's Level 3 Pension Assets	The change in the fair value of the Company’s Level 3 pension assets for the years ended December 31, 2023 and 2022 was as follows: ($ in millions) Real Estate Other Debt Securities Hedge Funds and Other Assets Total January 1, 2022 $157 $367 $430 $954 Realized gains/(losses) 1 (99) (1) (99) Unrealized gains 6 — (3) 3 Transfers in/(out), net (10) (12) (100) (122) Foreign currency losses (5) (21) (33) (59) December 31, 2022 $149 $235 $293 $677 Realized gains/(losses) 4 25 (29) — Unrealized gains/(losses) (19) — 21 2 Transfers out, net (17) (9) (89) (115) Foreign currency losses 2 7 26 35 December 31, 2023 $119 $258 $222 $599
Benefit Obligations
Weighted Average Assumptions Used for the Defined Benefit Pension and Other Postretirement Plans	The following weighted average assumptions were used to determine the benefit obligation for the Company’s defined benefit pension and other postretirement plans as of December 31, 2023 and 2022: United States International Total PPG 2023 2022 2023 2022 2023 2022 Discount rate 5.2 % 5.4 % 4.5 % 4.9 % 4.9 % 5.2 % Rate of compensation increase 2.5 % 2.5 % 3.2 % 3.1 % 2.8 % 2.7 %
Benefit Costs
Weighted Average Assumptions Used for the Defined Benefit Pension and Other Postretirement Plans	The following weighted average assumptions were used to determine the net periodic benefit cost for the Company’s defined benefit pension and other postretirement benefit plans for the three years in the period ended December 31, 2023: 2023 2022 2021 Discount rate 5.2 % 2.5 % 2.1 % Expected return on assets 6.5 % 5.0 % 4.8 % Rate of compensation increase 2.7 % 2.6 % 1.5 %

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	12 Months Ended
	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Schedule of Loss Contingencies by Contingency	Environmental Reserves ($ in millions) 2023 2022 New Jersey Chrome $53 $58 Glass and chemical 54 60 Other 120 99 Total environmental reserves $227 $217 Current Portion $52 $50
Environmental Costs	The pretax charges and cash outlays related to such environmental remediation in 2023, 2022 and 2021, were as follows: ($ in millions) 2023 2022 2021 New Jersey Chrome $7 $— $25 Glass and chemical 5 3 12 Other 34 10 7 Total pretax environmental charges $46 $13 $44 Cash outlays for environmental spending $36 $78 $56

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Summary of Shares Outstanding	Common Stock Treasury Stock Shares Outstanding January 1, 2021 581,146,136 (344,459,871) 236,686,265 Purchases — (1,521,765) (1,521,765) Issuances — 742,526 742,526 December 31, 2021 581,146,136 (345,239,110) 235,907,026 Purchases — (1,269,830) (1,269,830) Issuances — 436,730 436,730 December 31, 2022 581,146,136 (346,072,210) 235,073,926 Purchases — (673,638) (673,638) Issuances — 810,566 810,566 December 31, 2023 581,146,136 (345,935,282) 235,210,854

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Accumulated Other Comprehensive Loss	($ in millions) Foreign Currency Translation Adjustments (1) Pension and Other Postretirement Benefit Adjustments, net of tax (2) Unrealized Gain on Derivatives, net of tax Accumulated Other Comprehensive Loss January 1, 2021 ($1,663) ($937) $1 ($2,599) Current year deferrals to AOCL (325) 132 — (193) Reclassifications from AOCL to net income — 42 — 42 December 31, 2021 ($1,988) ($763) $1 ($2,750) Current year deferrals to AOCL (301) 175 — (126) Reclassifications from AOCL to net income 35 31 — 66 December 31, 2022 ($2,254) ($557) $1 ($2,810) Current year deferrals to AOCL 475 (93) — 382 Reclassifications from AOCL to net income 33 156 — 189 December 31, 2023 ($1,746) ($494) $1 ($2,239) (1) The tax cost related to unrealized foreign currency translation adjustments on net investment hedges as of December 31, 2023, 2022 and 2021 was $47 million, $73 million and $55 million, respectively. (2) The tax cost related to the adjustment for pension and other postretirement benefits as of December 31, 2023, 2022 and 2021 was $20 million, $83 million and $48 million, respectively. Reclassifications from AOCL are included in the computation of net periodic benefit costs (see Note 14, “Employee Benefit Plans").

Other (Income)_Charges, Net (Ta

Other (Income)/Charges, Net (Tables)	12 Months Ended
	Dec. 31, 2023
Other Income and Expenses [Abstract]
Components of Other Earnings	($ in millions) 2023 2022 2021 Environmental charges (1) $46 $13 $44 Pension and other postretirement benefit plans, non-service cost components 39 (10) (15) Share of net earnings of equity affiliates (See Note 5) (21) (25) (15) Loss/(gain) on sale of assets, net (2) 23 (4) (44) Argentina currency devaluation loss (3) 20 — — Royalty income (10) (8) (8) Business restructuring (income)/charges, net (2) 33 31 Income from legal settlements — — (22) Other, net (12) (26) (83) Total other charges/(income), net $83 ($27) ($112) (1) In 2023, PPG recognized charges of $30 million related to environmental remediation costs at certain legacy PPG manufacturing sites. (2) In 2023, PPG recognized a $22 million loss on the divestitures of the European and Australian traffic solutions businesses. In 2021, PPG recognized a $34 million gain on the sale of a production facility in connection with the Company’s manufacturing footprint consolidation plans and associated restructuring programs.

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]
Share-based Compensation, Stock Options, Activity	($ in millions) 2023 2022 2021 Total stock-based compensation $59 $35 $57 Income tax benefit recognized $12 $8 $12
Weighted Average Assumptions Used in Calculating the Fair Value of Stock Option	The following weighted average assumptions were used to calculate the fair values of stock option grants in each year: 2023 2022 2021 Weighted average exercise price $130.17 $151.87 $136.60 Risk-free interest rate 3.9 % 2.0 % 1.0 % Expected life of option in years 6.5 6.5 6.5 Expected dividend yield 1.7 % 1.6 % 1.6 % Expected volatility 27.8 % 25.7 % 25.3 %
Stock Options Outstanding, Exercisable and Activity	Stock Options Outstanding and Exercisable Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Life (in years) Intrinsic Value (in millions) Outstanding, January 1, 2023 3,517,451 $117.16 5.7 Granted 410,001 $130.17 Exercised (566,439) $96.64 Forfeited/Expired (42,250) $138.64 Outstanding, December 31, 2023 3,318,763 $122.00 5.7 $92 Vested or expected to vest, December 31, 2023 3,225,942 $121.44 5.6 $92 Exercisable, December 31, 2023 2,042,184 $110.97 4.1 $79
Stock Option Activity	The following table presents stock option activity for the years ended December 31, 2023, 2022 and 2021: ($ in millions) 2023 2022 2021 Total intrinsic value of stock options exercised $24 $12 $32 Cash received from stock option exercises $55 $12 $47 Income tax benefit from the exercise of stock options $6 $3 $8 Total fair value of stock options vested $10 $16 $11
RSU Activity	RSU Activity Number of Shares Weighted Average Grant Date Fair Value Outstanding, January 1, 2023 589,388 $136.99 Granted 321,045 $130.63 Vested (271,037) $131.14 Forfeited (33,455) $136.26 Outstanding, December 31, 2023 605,941 $137.96 Vested or expected to vest, December 31, 2023 569,073 $137.94

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Revenue from External Customers by Geographic Areas	Net sales by segment and region for the years ended December 31, 2023, 2022 and 2021 were as follows: ($ in millions) 2023 2022 2021 Performance Coatings United States and Canada $4,912 $4,718 $4,366 EMEA 3,627 3,550 3,582 Asia Pacific 1,104 1,118 1,254 Latin America 1,521 1,308 1,131 Total $11,164 $10,694 $10,333 Industrial Coatings United States and Canada $2,576 $2,666 $2,310 EMEA 1,989 1,908 1,854 Asia Pacific 1,770 1,705 1,723 Latin America 747 679 582 Total $7,082 $6,958 $6,469 Total Net Sales (1) United States and Canada (2) $7,488 $7,384 $6,676 EMEA 5,616 5,458 5,436 Asia Pacific 2,874 2,823 2,977 Latin America 2,268 1,987 1,713 Total PPG $18,246 $17,652 $16,802 (1) Net sales to external customers are attributed to geographic regions based upon the location of the operating unit shipping the product. (2) Net sales recognized in the United States represented 37%, 38%, and 36% of the Company’s total Net sales for the years ended December 31, 2023, 2022 and 2021, respectively.
Accounts Receivable, Allowance for Credit Loss	The following table summarizes allowance for doubtful accounts activity for the years ended December 31, 2023 and 2022: Trade Receivables Allowance for Doubtful Accounts ($ in millions) 2023 2022 January 1 $31 $31 Bad debt expense 17 52 Write-offs and recoveries of previously reserved trade receivables (21) (55) Other (2) 3 December 31 $25 $31

Reportable Business Segment I_2

Reportable Business Segment Information (Tables)	12 Months Ended
	Dec. 31, 2023
Segment Reporting [Abstract]
Reportable Business Segment	($ in millions) 2023 2022 2021 Net sales to external customers Performance Coatings $11,164 $10,694 $10,333 Industrial Coatings 7,082 6,958 6,469 Total Net sales $18,246 $17,652 $16,802 Segment income Performance Coatings $1,709 $1,399 $1,491 Industrial Coatings 966 643 680 Total Segment income $2,675 $2,042 $2,171 Corporate / Non-Segment Items Corporate unallocated (340) (218) (194) Interest expense, net of interest income (107) (113) (95) Impairment and other related charges, net (1) (160) (245) (21) Business restructuring-related costs, net (2) (43) (75) (27) Portfolio optimization (3) (53) (10) (86) Pension settlement charge (4) (190) — (50) Environmental remediation charges, net (5) (30) — (35) Insurance recoveries (6) 16 — — Argentina currency devaluation losses (7) (20) — — Expenses incurred due to natural disasters (8) — — (17) Change in allowance for doubtful accounts related to COVID-19 — — 14 Income from legal settlements — — 22 Asbestos-related claims reserve adjustment (9) — — 133 Total Income before income taxes $1,748 $1,381 $1,815 ($ in millions) 2023 2022 2021 Depreciation and amortization Performance Coatings $279 $296 $308 Industrial Coatings 213 207 212 Corporate / Non-Segment Items 66 51 41 Total $558 $554 $561 Share of net earnings of equity affiliates Performance Coatings $7 $7 $5 Industrial Coatings 1 — — Corporate / Non-Segment Items 13 18 10 Total $21 $25 $15 Segment assets (10) Performance Coatings $13,434 $13,088 $13,395 Industrial Coatings 5,643 5,802 5,807 Corporate / Non-Segment Items 2,570 1,854 2,149 Total $21,647 $20,744 $21,351 Investment in equity affiliates Performance Coatings $48 $42 $33 Industrial Coatings 18 15 15 Corporate / Non-Segment Items 75 77 78 Total $141 $134 $126 Expenditures for property (including business acquisitions) Performance Coatings $343 $254 $1,698 Industrial Coatings 184 313 784 Corporate / Non-Segment Items 131 65 26 Total $658 $632 $2,508
Geographic Information	($ in millions) 2023 2022 2021 Geographic Information Segment income United States and Canada $1,048 $819 $865 EMEA 679 505 612 Asia Pacific 430 332 354 Latin America 518 386 340 Total $2,675 $2,042 $2,171 Property, plant and equipment — net United States and Canada $1,559 $1,394 $1,377 EMEA 1,010 943 1,069 Asia Pacific 718 685 702 Latin America 357 306 294 Total $3,644 $3,328 $3,442 (1) In the fourth quarter 2023, the company recorded impairment and other related charges due to goodwill impairment recognized for the traffic solutions reporting unit as a result of its annual goodwill impairment test. The fair value of the traffic solutions reporting unit decreased primarily due to increases in the cost of capital (discount rate assumption) and declines in the reporting unit’s long-term forecast driven by challenges at its operations in Argentina due to the highly inflationary environment and changes to the reporting unit’s global footprint, including the fourth quarter 2023 divestiture of its European and Australian businesses. In 2022, the company recorded impairment and other related charges due to the wind down of the company's operation in Russia. In 2021, impairment charges were recorded for the write-down of certain assets related to the previously planned sale of certain smaller entities in non-strategic regions. (2) Business restructuring-related costs, net include business restructuring charges, offset by releases related to previously approved programs, which are included in Other charges/(income), net on the consolidated statement of income, accelerated depreciation of certain assets, which is included in Depreciation on the consolidated statement of income, and other restructuring-related costs, which are included in Cost of sales, exclusive of depreciation and amortization and Selling, general and administrative on the consolidated statement of income. Additionally, there was a $34 million gain on the sale of certain assets in 2021 in connection with the Company’s manufacturing footprint consolidation plans and associated restructuring programs. This gain is included in Other (income)/charges, net in the consolidated statement of income. (3) Portfolio optimization includes losses on the sale of non-core assets, including the losses recognized on the sales of the Company's European and Australian traffic solutions businesses in 2023, which are included in Other charges/(income), net in the consolidated statement of income, accelerated amortization expense recognized in 2023 related to the exit of a non-core business, which is included in Amortization in the consolidated statement of income, and the impact for the step up to fair value of inventory acquired in certain acquisitions, which is included in Cost of sales, exclusive of depreciation and amortization in the consolidated statement of income. Portfolio optimization also includes advisory, legal, accounting, valuation, other professional or consulting fees, and certain internal costs directly incurred to effect acquisitions, as well as similar fees and other costs to effect divestitures and other portfolio optimization exit actions. These costs are included in Selling, general and administrative expense in the consolidated statement of income. (4) In the first quarter 2023, PPG purchased group annuity contracts that transferred pension benefit obligations for certain of the company’s retirees in the U.S. to third-party insurance companies, resulting in a non-cash pension settlement charge. In 2021, the Company purchased group annuity contracts that transferred pension benefit obligations for certain of the Company’s retirees in Canada to a third-party insurance company. (5) Environmental remediation charges represent environmental remediation costs at certain legacy PPG manufacturing sites. These charges are included in Other charges/(income), net in the consolidated statement of income. (6) In the first quarter 2023, the company received reimbursement under its insurance policies for damages incurred at a southern U.S. factory from a winter storm in 2020. In the fourth quarter 2023, the company received reimbursement for a previously approved insurance claim under a policy covering legacy asbestos-related matters. These insurance recoveries are included in Other charges/(income), net in the consolidated statement of income. (7) In December 2023, the central bank of Argentina adjusted the official foreign currency exchange rate for the Argentine peso, significantly devaluing the currency relative to the United States dollar. Argentina currency devaluation losses represent foreign currency translation losses recognized during December 2023 related to the devaluation of the Argentine peso, which is included in Other charges/(income), net in the consolidated statement of income. (8) In early 2021, a winter storm damaged certain company factories in the southern U.S. Incremental expenses incurred due to these storms included costs related to maintenance and repairs of damaged property, freight and utility premiums and other incremental expenses directly related to the impacted areas. These incremental expenses are included in Other charges/(income), net in the consolidated statement of income. (9) In 2021, the reserve for asbestos-related claims was reduced to reflect the Company’s current estimate of potential liability for these claims. (10) Segment assets are the total assets used in the operation of each segment. Corporate assets principally include amounts recorded in Cash and cash equivalents, Deferred income taxes, and Property, plant and equipment, net on the consolidated balance sheet.

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Additional Information) (Detail) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2023 USD ($) Segment	Dec. 31, 2023 USD ($) operating_segment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Advertising costs expensed		$ 285			$ 252	$ 243
Research and development – total		456			470	463
Less: depreciation on research facilities		23			22	24
Research and development, net		433			448	$ 439
Number of operating segments			10	2
Goodwill, impairment loss		158
Tangible asset impairment charges	$ 201
Impairment of intangible assets, indefinite-lived (excluding goodwill)		2			4
Supply chain finance obligation		301	$ 301	$ 301	$ 390
Supplier Finance Program, Obligation, Statement of Financial Position [Extensible Enumeration]					Accounts payable and accrued liabilities
Asset retirement obligation		23	$ 23	$ 23
Traffic Solutions
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Goodwill, impairment loss		$ 158
Indefinite-lived Intangible Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tangible asset impairment charges	124
Finite-Lived Intangible Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tangible asset impairment charges	$ 23
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Identifiable intangible assets with finite lives estimated useful lives		1 year	1 year	1 year
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Identifiable intangible assets with finite lives estimated useful lives		30 years	30 years	30 years

Acquisitions (Detail)

Acquisitions (Detail)	12 Months Ended
	Dec. 31, 2023 Segment	Dec. 31, 2023 operating_segment	Dec. 31, 2022	Jun. 10, 2021	Jun. 09, 2021
Business Acquisition [Line Items]
Number of operating segments	10	2
Tikkurila
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired			100%	97.10%	9.30%

Working Capital Detail (Detail)

Working Capital Detail (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Disclosure Components Of Working Capital Detail [Abstract]
Trade - net	$ 2,881	$ 2,824
Other - net	398	479
Total	3,279	3,303
Finished products	1,197	1,209
Work in process	236	238
Raw materials	640	784
Supplies	54	41
Total	2,127	2,272
Trade	2,612	2,538
Accrued payroll	674	501
Customer rebates	414	377
Other postretirement and pension benefits	96	77
Income taxes	128	37
Other	543	557
Total	$ 4,467	$ 4,087

Working Capital Detail (Additio

Working Capital Detail (Additional Information) (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Disclosure Components Of Working Capital Detail [Abstract]
Percentage of inventories valued using the LIFO method	20%	21%
FIFO adjustment	$ 249	$ 272

Property, Plant and Equipment_2

Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant, and Equipment Disclosure [Line Items]
Property	$ 8,607	$ 7,977
Accumulated depreciation, depletion and amortization, property, plant, and equipment	4,963	4,649
Property, plant and equipment, net	3,644	3,328	$ 3,442
Land and land improvements
Property, Plant, and Equipment Disclosure [Line Items]
Property	$ 572	548
Land and land improvements | Minimum
Property, Plant, and Equipment Disclosure [Line Items]
Property useful lives	1 year
Land and land improvements | Maximum
Property, Plant, and Equipment Disclosure [Line Items]
Property useful lives	30 years
Buildings
Property, Plant, and Equipment Disclosure [Line Items]
Property	$ 1,908	1,774
Buildings | Minimum
Property, Plant, and Equipment Disclosure [Line Items]
Property useful lives	20 years
Buildings | Maximum
Property, Plant, and Equipment Disclosure [Line Items]
Property useful lives	40 years
Machinery and equipment
Property, Plant, and Equipment Disclosure [Line Items]
Property	$ 4,157	3,960
Machinery and equipment | Minimum
Property, Plant, and Equipment Disclosure [Line Items]
Property useful lives	5 years
Machinery and equipment | Maximum
Property, Plant, and Equipment Disclosure [Line Items]
Property useful lives	25 years
Other
Property, Plant, and Equipment Disclosure [Line Items]
Property	$ 1,287	1,203
Other | Minimum
Property, Plant, and Equipment Disclosure [Line Items]
Property useful lives	3 years
Other | Maximum
Property, Plant, and Equipment Disclosure [Line Items]
Property useful lives	20 years
Construction in progress
Property, Plant, and Equipment Disclosure [Line Items]
Property	$ 683	$ 492

Investments (Detail)

Investments (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Debt and Equity Securities, FV-NI [Line Items]
Investments	$ 259	$ 244
Equity in undistributed earnings losses of subsidiaries	21	25	$ 15
Proceeds from dividends received	17	17	$ 9
Investments in equity affiliates
Debt and Equity Securities, FV-NI [Line Items]
Investments	141	134
Marketable equity securities (See Note 11) | Trading Securities
Debt and Equity Securities, FV-NI [Line Items]
Investments	74	61
Other
Debt and Equity Securities, FV-NI [Line Items]
Investments	$ 44	$ 49
Investments In Other Operating Joint Venture | Minimum
Debt and Equity Securities, FV-NI [Line Items]
Percentage of ownership interests	20%
Investments In Other Operating Joint Venture | Maximum
Debt and Equity Securities, FV-NI [Line Items]
Percentage of ownership interests	50%

Goodwill and Other Identifiab_3

Goodwill and Other Identifiable Intangible Assets (Carrying Amount of Goodwill Attributable to Each Reportable Segment) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Roll Forward]
Beginning Balance	$ 6,078	$ 6,248
Acquisitions, including purchase accounting adjustments	139	46
Divestitures	5	40
Foreign currency impact	146	(176)
Goodwill impairment	(158)
Ending Balance	6,200	6,078
Traffic Solutions
Goodwill [Roll Forward]
Goodwill impairment	(158)
Ending Balance	391
Performance Coatings Segment
Goodwill [Roll Forward]
Beginning Balance	4,881	5,034
Acquisitions, including purchase accounting adjustments	126	31
Divestitures	5	40
Foreign currency impact	150	(144)
Goodwill impairment	(158)
Ending Balance	4,994	4,881
Industrial Coatings Segment
Goodwill [Roll Forward]
Beginning Balance	1,197	1,214
Acquisitions, including purchase accounting adjustments	13	15
Divestitures	0	0
Foreign currency impact	(4)	(32)
Ending Balance	$ 1,206	$ 1,197

Goodwill and Other Identifiab_4

Goodwill and Other Identifiable Intangible Assets (Identifiable Intangible Assets with Finite Lives) (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Acquired Finite-Lived Intangible Assets [Line Items]
Carrying amount of acquired trademarks with indefinite lives	$ 1,442	$ 1,325
Gross carrying amount	3,147	3,043
Intangible assets, gross (excluding goodwill)	4,589	4,368
Accumulated amortization	(2,165)	(1,954)
Intangible assets, accumulated amortization (excluding goodwill)		1,954
Net	982	1,089
Total Identifiable Intangible Assets	2,424	2,414
Acquired technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	845	827
Accumulated amortization	(678)	(636)
Net	167	191
Customer-related
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	1,933	1,855
Accumulated amortization	(1,259)	(1,112)
Net	674	743
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	319	311
Accumulated amortization	(180)	(158)
Net	139	153
Other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	50	50
Accumulated amortization	(48)	(48)
Net	$ 2	$ 2

Goodwill and Other Identifiab_5

Goodwill and Other Identifiable Intangible Assets (Additional Information) (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2023	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Goodwill, impairment loss				$ 158
Goodwill	$ 6,200			6,200	$ 6,078	$ 6,248
Goodwill, accumulated impairment loss	158			158
Impairment of intangible assets, indefinite-lived (excluding goodwill)				2	4
Impairment and other-related charges, net		$ 290	$ 147	160	245	21
Aggregate amortization expense of identifiable intangible assets				167	$ 166	$ 172
Accelerated amortization expense	6
Traffic Solutions
Goodwill [Line Items]
Goodwill, impairment loss				158
Goodwill	$ 391			$ 391

Goodwill and Other Identifiab_6

Goodwill and Other Identifiable Intangible Assets (Identifiable Intangible Assets, Future Amortization) (Detail) $ in Millions	Dec. 31, 2023 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2024	$ 147
2025	128
2026	107
2027	96
2028	$ 83

Impairment and Other Related _2

Impairment and Other Related Charges (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restructuring Cost and Reserve [Line Items]
Impairment and other-related charges, net	$ (290)	$ (147)	$ (160)	$ (245)	$ (21)
Tangible asset impairment charges	201
Other asset impairment charges	89		160	245	21
Release of asset impairment charges			$ 63
Disposal Group, Held-for-sale, Not Discontinued Operations
Restructuring Cost and Reserve [Line Items]
Impairment and other-related charges, net				$ (14)	$ (21)
Revenue Benchmark | Geographic Concentration Risk | Russia
Restructuring Cost and Reserve [Line Items]
Service revenue, percentage of total revenue			1%	1%
Revenue Benchmark | Business Concentration Risk | Smaller Non-Strategic Businesses
Restructuring Cost and Reserve [Line Items]
Service revenue, percentage of total revenue			1%	1%	1%
Indefinite-lived Intangible Assets
Restructuring Cost and Reserve [Line Items]
Tangible asset impairment charges	124
Property, Plant and Equipment
Restructuring Cost and Reserve [Line Items]
Tangible asset impairment charges	54
Finite-Lived Intangible Assets
Restructuring Cost and Reserve [Line Items]
Tangible asset impairment charges	$ 23

Business Restructuring (Additio

Business Restructuring (Additional Information) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restructuring Reserve [Roll Forward]
Beginning balance	$ 169	$ 231
Approved restructuring actions	(2)	33	$ 31
Restructuring, cash payments	(57)	(85)	(77)
Restructuring reserve, foreign currency impact, gain (loss)	3	(10)
Ending balance	113	169	$ 231
Restructuring Charges
Restructuring Reserve [Roll Forward]
Approved restructuring actions	33	84
Restructuring, release of prior reserves and other adjustments	$ 35	$ 51

Leases - Schedule of Components

Leases - Schedule of Components of Lease Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Lessee, Lease, Description [Line Items]
Total operating lease cost	$ 266	$ 259	$ 260
Finance lease cost:
Amortization of right-of-use assets	2	2	2
Interest on lease liabilities	1	1	1
Total finance lease cost	3	3	3
Total lease cost	269	262	263
Variable lease costs	20	18	18
Short-term lease costs	20	22	16
Cost of sales, exclusive of depreciation and amortization
Lessee, Lease, Description [Line Items]
Total operating lease cost	46	43	41
Selling, general and administrative
Lessee, Lease, Description [Line Items]
Total operating lease cost	$ 220	$ 216	$ 219

Leases - Schedule of Classifica

Leases - Schedule of Classification on the Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Assets:
Operating	$ 832	$ 829
Finance	$ 14	$ 15
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant and equipment, net	Property, plant and equipment, net
Total leased assets	$ 846	$ 844
Current
Operating	194	183
Finance	$ 2	$ 3
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Debt, Current	Debt, Current
Noncurrent
Operating	$ 622	$ 636
Finance	$ 6	$ 7
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt	Long-term debt
Total lease liabilities	$ 824	$ 829
Finance lease ROU asset, accumulated depreciation	$ 15	$ 14

Leases - Schedule of Cash Paid

Leases - Schedule of Cash Paid for Lease Liabilities and Right-of-Use Assets Obtained in Exchange for Lease Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating cash flows paid for operating leases	$ 224	$ 218	$ 224
Operating cash flows paid for finance leases	1	1	1
Financing cash flows paid for finance leases	3	2	3
Operating leases	174	161	253
Finance leases	$ 1	$ 3	$ 0

Leases - Schedule of Weighted-A

Leases - Schedule of Weighted-Average Remaining Lease Term and Weighted-Average Discount Rate (Details)	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Weighted-average remaining lease term, operating leases	6 years 2 months 12 days	6 years 8 months 12 days	7 years 1 month 6 days
Weighted-average remaining lease term, finance leases	9 years 6 months	9 years	6 years 4 months 24 days
Weighted-average discount rate, operating leases	3.20%	2.60%	2.10%
Weighted-average discount rate, finance leases	5.90%	5.70%	5.80%

Leases - Schedule of Maturities

Leases - Schedule of Maturities of Lease Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Operating Leases
2024	$ 216
2025	176
2026	137
2027	103
2028	80
Thereafter	184
Total lease payments	896
Less: Interest	80
Total lease obligations, operating leases	816
Finance Leases
2024	2
2025	2
2026	2
2027	1
2028	1
Thereafter	1
Total lease payments	9
Less: Interest	1
Total lease obligations, finance leases	$ 8	$ 10

Borrowings and Lines of Credi_2

Borrowings and Lines of Credit (Long-term Debt Obligations) (Details) - USD ($)	1 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022	May 31, 2022	Jun. 30, 2021	Feb. 28, 2018
Debt Instrument [Line Items]
Long-term debt		$ 6,042,000,000		$ 6,796,000,000
Line of credit, amount outstanding		0		0
Finance lease obligation		8,000,000		10,000,000
Long-Term Debt, Adjustments Due To Derivatives		(14,000,000)		(20,000,000)
Long-term debt and finance lease obligations		6,050,000,000		6,806,000,000
Less payments due within one year		302,000,000		303,000,000
Long-term debt		5,748,000,000		6,503,000,000
3.2% Notes due 2023
Debt Instrument [Line Items]
Long-term debt		$ 0		$ 300,000,000
Interest rate swaps							$ 150,000,000
Effective interest rates		5.10%		2.20%
Debt instrument, interest rate, stated percentage		3.20%
Notional amount of non-derivative instruments		$ 300,000,000
Term Loan Credit Agreement, due 2024
Debt Instrument [Line Items]
Long-term debt		0		$ 1,099,000,000
2.4% Notes due 2024
Debt Instrument [Line Items]
Long-term debt		$ 299,000,000		299,000,000
Debt instrument, interest rate, stated percentage		2.40%
Notes 0.875% Due 2025
Debt Instrument [Line Items]
Long-term debt		$ 660,000,000		639,000,000
1.875% Notes Due 2025 [Member]
Debt Instrument [Line Items]
Long-term debt		330,000,000		319,000,000
Debt instrument, interest rate, stated percentage					1.875%
1.200% Notes due 2026
Debt Instrument [Line Items]
Long-term debt		696,000,000		694,000,000
Debt instrument, interest rate, stated percentage	1.20%
Notional amount of non-derivative instruments	$ 700,000,000
Notes 1.4 Percent Due 2027
Debt Instrument [Line Items]
Long-term debt		$ 659,000,000		638,000,000
Debt instrument, interest rate, stated percentage		1.40%
3.75% Notes due 2028
Debt Instrument [Line Items]
Long-term debt		$ 808,000,000		$ 809,000,000
Interest rate swaps							$ 375,000,000
Effective interest rates		6.20%		2.60%
Debt instrument, interest rate, stated percentage		3.75%
Notional amount of non-derivative instruments		$ 800
2.8% Notes due 2029
Debt Instrument [Line Items]
Long-term debt		$ 298,000,000		$ 298,000,000
Debt instrument, interest rate, stated percentage		2.80%
2.750% Notes Due 2029
Debt Instrument [Line Items]
Long-term debt		$ 768,000,000		743,000,000
Debt instrument, interest rate, stated percentage					2.75%
Notes 2.5 Percent Due 2029
Debt Instrument [Line Items]
Long-term debt		$ 87,000,000		85,000,000
Debt instrument, interest rate, stated percentage		2.50%
2.55% Notes Due 2030 [Member]
Debt Instrument [Line Items]
Long-term debt		$ 297,000,000		297,000,000
1.95% Notes due 2037
Debt Instrument [Line Items]
Long-term debt		54,000,000		52,000,000
Debt instrument, interest rate, stated percentage			1.95%
Notes 7.70 Percent Due 2038
Debt Instrument [Line Items]
Long-term debt		$ 174,000,000		174,000,000
Debt instrument, interest rate, stated percentage		7.70%
Notes 5.5 Percent Due 2040
Debt Instrument [Line Items]
Long-term debt		$ 247,000,000		247,000,000
Debt instrument, interest rate, stated percentage		5.50%
Notes 3.0 Percent Due 2044
Debt Instrument [Line Items]
Long-term debt		$ 126,000,000		122,000,000
Debt instrument, interest rate, stated percentage		3%
Other Non-US Debt
Debt Instrument [Line Items]
Long-term debt		$ 1,000,000		1,000,000		$ 30,000,000
Term Loan Credit Agreement, Due 2026
Debt Instrument [Line Items]
Long-term debt		$ 552,000,000		$ 0

Borrowings and Lines of Credi_3

Borrowings and Lines of Credit (Additional Information) (Details)		1 Months Ended									3 Months Ended	12 Months Ended
	Aug. 30, 2019	Jan. 31, 2024 USD ($)	Apr. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	May 31, 2022 USD ($)	Mar. 31, 2022 EUR (€)	Dec. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Aug. 31, 2019 USD ($)	Jun. 30, 2021 USD ($) instrument	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jul. 31, 2023 USD ($)	May 31, 2022 EUR (€)	Dec. 31, 2021 EUR (€)	Feb. 28, 2021 USD ($)
Debt Instrument [Line Items]
Proceeds from issuance of debt					$ 1,061,000,000				$ 692,000,000
Debt instrument, covenant, total indebtedness to total capitalization ratio, maximum, percentage										0.60
Debt instrument, covenant, acquisition for consideration, minimum threshold										$ 1,000,000,000
Debt instrument, covenant, total indebtedness to total capitalization ratio, maximum when acquisition for consideration threshold is met, percentage										0.65
Debt instrument, total indebtedness to total capitalization, percentage												0.42
Repayments of debt											$ 170,000,000	$ 300,000,000	$ 0	$ 847,000,000
Debt instrument, number of obligations matured | instrument											2
Long-term debt												6,042,000,000	6,796,000,000
repayments of long-term lines of credit												1,100,000,000	300,000,000	0
Short-term borrowings												4,000,000	10,000,000
Repayments of medium-term notes												0	0	$ 400,000,000
Line of credit, amount outstanding												0	0
Outstanding letters of credit and surety bonds												232,000,000	231,000,000
3.2% Notes Due 2023
Debt Instrument [Line Items]
Repayments of debt				$ 300,000,000
Debt instrument, interest rate, stated percentage				3.20%
Term Loan
Debt Instrument [Line Items]
Debt instrument, face amount			$ 500,000,000
Debt instrument, increase limit			250,000,000
Proceeds from issuance of debt			$ 500,000,000
Debt instrument, increase												250,000,000
Term Loan | Subsequent Event
Debt Instrument [Line Items]
Proceeds from issuance of debt		$ 250,000,000
Non-callable Debentures 9 Percent Due 2021
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage								9%			9%
Long-term debt								$ 134,000,000			$ 134,000,000
Unsecured Debt | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument, term				5 years
Line of credit facility, maximum borrowing capacity															$ 2,300,000,000
Line of credit facility, additional borrowings capacity available												750,000,000
Term Loan Credit Agreement, due 2024
Debt Instrument [Line Items]
Debt instrument, face amount																		$ 2,000,000,000
Long-term debt												0	1,099,000,000
Proceeds from revolving credit facility							$ 700,000,000	700,000,000
repayments of long-term lines of credit												1,100,000,000	300,000,000
1.875% Notes Due 2025 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount | €																€ 300,000,000
Debt instrument, interest rate, stated percentage																1.875%
Debt instrument, redemption price, percentage					101%
Long-term debt												330,000,000	319,000,000
2.750% Notes Due 2029
Debt Instrument [Line Items]
Debt instrument, face amount | €																€ 700,000,000
Debt instrument, interest rate, stated percentage																2.75%
Debt instrument, redemption price, percentage					101%
Long-term debt												768,000,000	743,000,000
1.95% Notes due 2037
Debt Instrument [Line Items]
Debt instrument, face amount | €						€ 50,000,000
Debt instrument, term						15 years
Debt instrument, interest rate, stated percentage				1.95%
Long-term debt												54,000,000	52,000,000
1.200% Notes due 2026
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage									1.20%
Debt instrument, redemption price, percentage						101%
Long-term debt												696,000,000	694,000,000
Notional amount of nonderivative instruments									$ 700,000,000
Notes 0.875 Percent Due 2022
Debt Instrument [Line Items]
Debt instrument, face amount | €																	€ 600,000,000
Debt instrument, interest rate, stated percentage																	0.875%
Other Non-US Debt
Debt Instrument [Line Items]
Long-term debt								$ 30,000,000			$ 30,000,000	$ 1,000,000	1,000,000
3.75% Notes due 2028
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage												3.75%
Long-term debt												$ 808,000,000	$ 809,000,000
Notional amount of nonderivative instruments												$ 800
Effective interest rates												6.20%	2.60%
2.55% Notes Due 2030 [Member]
Debt Instrument [Line Items]
Long-term debt												$ 297,000,000	$ 297,000,000
Commercial paper
Debt Instrument [Line Items]
Long-term commercial paper, noncurrent												0
Minimum
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee, percentage	0.06%
Periodic payment amount												100,000,000
Maximum
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee, percentage	0.125%
International Operations
Debt Instrument [Line Items]
Lines of credit, current borrowing capacity												$ 491,000,000

Borrowings and Lines of Credi_4

Borrowings and Lines of Credit (Long-term Debt Maturities) (Details) $ in Millions	Dec. 31, 2023 USD ($)
Debt Disclosure [Abstract]
2024	$ 302
2025	989
2026	1,250
2027	662
2028	784
Thereafter	$ 2,063

Borrowings and Lines of Credi_5

Borrowings and Lines of Credit (Short-term Debt Outstanding) (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Debt Disclosure [Abstract]
Short-term borrowings	$ 4	$ 10
Weighted average interest rate	2.40%	2.70%

Financial Instruments, Hedgin_3

Financial Instruments, Hedging Activities and Fair Value Measurements (Additional Information) (Detail) € in Billions	12 Months Ended
	Dec. 31, 2023 EUR (€)	Dec. 31, 2022 EUR (€)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair value of debt instrument designated as hedge of net investment in foreign operations			$ 3,300,000,000	$ 2,600,000,000
Accumulated pretax unrealized translation gains			8,023,000,000	6,709,000,000	$ 6,411,000,000	$ 5,815,000,000
Net Investment Hedging
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional amount of nonderivative instruments | €	€ 3	€ 2.5
Foreign Currency Contracts
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional amount of derivative instruments designated as net investment hedges			2,500,000,000	1,800,000,000
Foreign currency contracts, liability, fair value disclosure			23,000,000	24,000,000
Interest Rate Swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional amount of derivative instruments designated as net investment hedges			375,000,000	525,000,000
Interest rate derivatives, at fair value, net			14,000,000	20,000,000
Cross Currency Swaps
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative instruments in hedges, net investment in foreign operations, assets, fair value, net			33,000,000	88,000,000
Currency Swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional amount of derivative instruments designated as net investment hedges			475,000,000	775,000,000
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Accumulated pretax unrealized translation gains			$ 223,000,000	$ 327,000,000

Financial Instruments, Hedgin_4

Financial Instruments, Hedging Activities and Fair Value Measurements (Fair Value, Cash Flow and Net Investment Hedges) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Fair Value Hedging
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized Amount	$ (10)	$ 8	$ 15
Fair Value Hedging | Foreign Currency Contracts
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized Amount	(10)	8	15
Net Investment Hedging
Derivatives, Fair Value [Line Items]
Derivative financial instruments	(104)	123	226
Gain (Loss) Recognized Amount	12	16	13
Net Investment Hedging | Currency Swap
Derivatives, Fair Value [Line Items]
Derivative financial instruments	(15)	38	53
Gain (Loss) Recognized Amount	12	16	13
Net Investment Hedging | Other Foreign Currency Denominated Debt
Derivatives, Fair Value [Line Items]
Derivative financial instruments	(89)	85	173
Economic Hedging | Foreign Currency Contracts
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized Amount	$ 49	$ 43	$ 23

Financial Instruments, Hedgin_5

Financial Instruments, Hedging Activities and Fair Value Measurements (Assets and Liabilities Reported at Fair Value on a Recurring Basis) (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other current assets	Other current assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accounts payable and accrued liabilities	Accounts payable and accrued liabilities
Level 1 | Short-term Investments | Marketable Equity Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets reported at fair value on a recurring basis	$ 9	$ 9
Level 1 | Investments | Marketable Equity Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets reported at fair value on a recurring basis	74	61
Level 2 | Foreign Currency Contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities reported at fair value on a recurring basis	5	3
Level 2 | Other Current Assets | Cross Currency Swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets reported at fair value on a recurring basis	2	39
Level 2 | Other Assets | Cross Currency Swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets reported at fair value on a recurring basis	31	49
Liabilities reported at fair value on a recurring basis	0	1
Level 2 | Other Liabilities | Cross Currency Swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities reported at fair value on a recurring basis	14	19
Not Designated as Hedging Instrument [Member] | Level 2 | Foreign Currency Contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets reported at fair value on a recurring basis	$ 28	$ 27

Financial Instruments, Hedgin_6

Financial Instruments, Hedging Activities and Fair Value Measurements (Long-Term Debt) (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Long-term debt	$ 6,042	$ 6,796
Long-term debt (excluding capital lease obligations), fair values	5,781	6,375
Total lease obligations, finance leases	8	10
Short-term borrowings	$ 4	$ 10

Earnings Per Common Share (Addi

Earnings Per Common Share (Additional Detail) (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings per common share (attributable to PPG)
Income from continuing operations, net of tax	$ 1,270	$ 1,028	$ 1,420
(Loss)/income from discontinued operations, net of tax	0	(2)	19
Net income (attributable to PPG)	$ 1,270	$ 1,026	$ 1,439
Weighted average common shares outstanding	236	236.1	237.6
Effect of dilutive securities:
Stock options	0.5	0.5	1
Other stock compensation plans	0.7	0.7	0.8
Potentially dilutive common shares	1.2	1.2	1.8
Adjusted weighted average common shares outstanding	237.2	237.3	239.4
Earnings per common share (attributable to PPG)
Continuing operations (in dollars per share)	$ 5.38	$ 4.35	$ 5.98
Discontinued operations (in dollars per share)	0	(0.01)	0.08
Net Income (attributable to PPG) (in dollars per share)	5.38	4.34	6.06
Earnings per common share - assuming dilution (attributable to PPG)
Continuing operations (in dollars per share)	5.35	4.33	5.93
Discontinued operations (in dollars per share)	0	(0.01)	0.08
Earnings per common share - assuming dilution (in dollars per share)	$ 5.35	$ 4.32	$ 6.01
Outstanding stock options excluded from the computation of diluted earnings per share due to their antidilutive effect	0.9	0.9

Income Taxes (Components of Inc

Income Taxes (Components of Income Tax Expense) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current
U.S. federal	$ 102	$ 137	$ 25
U.S. state and local	16	20	13
Foreign	504	325	301
Total current income tax expense	622	482	339
Deferred
U.S. federal	(153)	(79)	12
U.S. state and local	(14)	(7)	3
Foreign	(16)	(71)	20
Total deferred income tax (benefit)/expense	(183)	(157)	35
Total income tax expense	$ 439	$ 325	$ 374

Income Taxes (Reconciliation of

Income Taxes (Reconciliation of Statutory U.S. Corporate Federal Income Tax Rate to Effective Income Tax Rate) (Detail)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
U.S. federal income tax rate	21%	21%	21%
Changes in rate due to:
Taxes on non-U.S. earnings	4.20%	3.60%	2.70%
Change in valuation allowance reserves	3.40%	0.60%	0%
Other foreign tax effects	(2.70%)	(1.60%)	(0.40%)
Impairment and other related charges, net	1.90%	1.40%	0%
Uncertain tax positions	(1.70%)	(0.40%)	(1.40%)
U.S. tax benefit on foreign operations	0.90%	0.40%	1.60%
U.S. tax incentives	0.80%	1%	0.60%
Tax benefits from equity awards	(0.20%)	(0.30%)	(0.30%)
U.S. state and local taxes	0%	0.70%	0.80%
Other	0.90%	(0.10%)	0.40%
Effective income tax rate	25.10%	23.50%	20.60%

Income Taxes (Additional Inform

Income Taxes (Additional Information) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) subsidiary jurisdiction	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Income Taxes [Line Items]
Effective income tax rate reconciliation, percent	25.10%	23.50%	20.60%
Income before income taxes of non-US operations	$ 1,748	$ 1,381	$ 1,815
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount	249	182
Undistributed earnings of foreign subsidiaries	$ 5,800
Number of PPG subsidiaries | subsidiary	265
Number of taxable jurisdictions | jurisdiction	70
Income tax, potential U.S. tax cost for repatriation of foreign earnings	$ 123
Unrecognized tax benefits that would affect the effective tax rate, if recognized	117
U.S.
Income Taxes [Line Items]
Income before income taxes of non-US operations	(75)	288	469
Non United States
Income Taxes [Line Items]
Income before income taxes of non-US operations	$ 1,823	$ 1,093	$ 1,346

Income Taxes (Net Deferred Inco

Income Taxes (Net Deferred Income Tax Assets and Liabilities) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Tax Examination [Line Items]
Employee benefits	$ 273	$ 275
Contingent and accrued liabilities	61	67
Operating loss and other carry-forwards	279	218
Operating lease liabilities	203	203
Research and development amortization	214	149
Other	201	168
Valuation allowance	249	182
Deferred tax assets, net of valuation allowance	982	898
Property	223	223
Intangibles	696	720
Employee benefits	47	81
Operating lease right-of-use assets	207	206
Other	44	74
Deferred tax liabilities, gross	1,217	1,304
Deferred tax liabilities, net	235	406
Net operating loss carryforwards	158	150
Income tax credit carryforwards	108	89
Income tax, potential U.S. tax cost for repatriation of foreign earnings	123
Deferred income tax assets related to
Employee benefits	273	275
Contingent and accrued liabilities	61	67
Operating loss and other carry-forwards	279	218
Operating lease liabilities	203	203
Research and development amortization	214	149
Other	201	168
Valuation allowance	(249)	(182)
Total	982	898
Deferred income tax liabilities related to
Property	223	223
Intangibles	696	720
Employee benefits	47	81
Operating lease right-of-use assets	207	206
Other	44	74
Total	1,217	1,304
Deferred income tax liabilities – net	$ (235)	(406)
Minimum
Income Tax Examination [Line Items]
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2024
Tax Credit Carryforward, Expiration Date	Dec. 31, 2024
Maximum
Income Tax Examination [Line Items]
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2043
Tax Credit Carryforward, Expiration Date	Dec. 31, 2043
Net Operating Loss, Indefinite Life
Income Tax Examination [Line Items]
Net operating loss carryforwards	$ 86	84
Net Operating Loss, Expiring Within 20 Years
Income Tax Examination [Line Items]
Net operating loss carryforwards	$ 72	$ 66

Income Taxes (Unrecognized Tax

Income Taxes (Unrecognized Tax Benefits) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 145	$ 158	$ 175
Current year tax positions - additions	16	19	12
Prior year tax positions - additions	33	2	10
Prior year tax positions - reductions	(14)	(2)	(2)
Statute of limitations expirations	(9)	(23)	(19)
Settlements	(51)	(3)	(21)
Foreign currency translation	1	(6)	3
Ending balance	121	145	158
Accrued interest and penalties related to unrecognized tax benefits	14	17	17
(Income)/loss recognized in income tax expense related to interest and penalties	$ (2)	$ 1	$ (2)

Employee Benefit Plans (Additio

Employee Benefit Plans (Additional Information) (Detail) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2017	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pension and Other Postretirement Benefits Disclosure [Line Items]
Pension settlement charge			$ 190	$ 0	$ 50
Reduction in projected benefit obligation due to non-cash settlement charge			309		$ 175
ABO for all defined benefit pension plans			$ 2,200	$ 2,300
Return on plan assets assumption			6.50%	5%	4.80%
Impact on net periodic pension expense			$ 5
Weighted-average healthcare cost trend rate assumed for next fiscal year			5.80%
Assumed ultimate health care cost trend rate			3.90%
Voluntary contributions			$ 28
Aggregate PBO for the pension plans with PBO in excess of plan assets			1,426	$ 1,863
Aggregate fair value of plan assets for the pension plans with PBO in excess of plan assets			771	1,270
Aggregate ABO for the pension plans with ABO in excess of plan assets			1,366	1,833
Fair value of plan assets for the pension plans with ABO in excess of plan assets			$ 737	1,266
Defined Contribution Plan Contribution Rates As Percentage Of Employees Earnings			6%
Minimum
Pension and Other Postretirement Benefits Disclosure [Line Items]
Defined Contribution Plan Contribution Rates As Percentage Of Employees Earnings			2%
Maximum
Pension and Other Postretirement Benefits Disclosure [Line Items]
Defined Contribution Plan Contribution Rates As Percentage Of Employees Earnings			5%
Scenario, Forecast
Pension and Other Postretirement Benefits Disclosure [Line Items]
Impact on net periodic pension expense		$ 3
Weighted-average healthcare cost trend rate assumed for next fiscal year		5.50%
Assumed ultimate health care cost trend rate		3.90%
Pension Plan
Pension and Other Postretirement Benefits Disclosure [Line Items]
Contributions to defined benefit pension plans			$ 46	11
Defined Benefit Plan, Benefit Obligation, Benefits Paid			129	140
Net actuarial loss arising during the year			141
Estimated future benefit payments in 2022			152
Estimated future benefit payments in 2023			137
Estimated future benefit payments in 2024			140
Estimated future benefit payments in 2025			145
Estimated future benefit payments in 2026			146
Estimated aggregate future benefits payments for the five years thereafter			775
Other Postretirement Benefits
Pension and Other Postretirement Benefits Disclosure [Line Items]
Plan amendments			(17)	0
Defined Benefit Plan, Benefit Obligation, Benefits Paid			42	44
Net actuarial loss arising during the year			0
Estimated future benefit payments in 2022			45
Estimated future benefit payments in 2023			44
Estimated future benefit payments in 2024			41
Estimated future benefit payments in 2025			40
Estimated future benefit payments in 2026			40
Estimated aggregate future benefits payments for the five years thereafter			$ 177
Other Postretirement Benefits | Scenario, Forecast
Pension and Other Postretirement Benefits Disclosure [Line Items]
Impact on net periodic pension expense		$ 2
Postretirement Health Coverage
Pension and Other Postretirement Benefits Disclosure [Line Items]
Plan amendments	$ 306
Amortization reduction period	5 years 7 months 6 days
Welfare Benefits - U.S.
Pension and Other Postretirement Benefits Disclosure [Line Items]
Percentage of defined benefit pension plan assets market value			86%
United States
Pension and Other Postretirement Benefits Disclosure [Line Items]
Contributions to defined benefit pension plans			$ 28	0	$ 0
Return on plan assets assumption			7.40%
Percentage of defined benefit pension plan assets market value			93%
United States | Scenario, Forecast
Pension and Other Postretirement Benefits Disclosure [Line Items]
Return on plan assets assumption		7.70%
United States | Pension Plan
Pension and Other Postretirement Benefits Disclosure [Line Items]
Contributions to defined benefit pension plans			$ 28	0
Defined Benefit Plan, Benefit Obligation, Benefits Paid			79	91
United States | Other Postretirement Benefits
Pension and Other Postretirement Benefits Disclosure [Line Items]
Plan amendments			(17)	0
Defined Benefit Plan, Benefit Obligation, Benefits Paid			39	40
International
Pension and Other Postretirement Benefits Disclosure [Line Items]
Contributions to defined benefit pension plans			18	11	$ 10
International | Scenario, Forecast
Pension and Other Postretirement Benefits Disclosure [Line Items]
Return on plan assets assumption		6.60%
International | Pension Plan
Pension and Other Postretirement Benefits Disclosure [Line Items]
Contributions to defined benefit pension plans			18	11
Defined Benefit Plan, Benefit Obligation, Benefits Paid			50	49
International | Other Postretirement Benefits
Pension and Other Postretirement Benefits Disclosure [Line Items]
Plan amendments			0	0
Defined Benefit Plan, Benefit Obligation, Benefits Paid			$ 3	$ 4
Canada, Netherlands, And United Kingdom
Pension and Other Postretirement Benefits Disclosure [Line Items]
Percentage of defined benefit pension plan assets market value			93%

Employee Benefit Plans (Changes

Employee Benefit Plans (Changes in Projected Benefit Obligations, Plan Assets and Funded Status) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	$ 1,974
End balance	1,729	$ 1,974
Amounts recognized in the Consolidated Balance Sheet:
Accounts payable and accrued liabilities	(96)	(77)
Other postretirement benefits	(450)	(476)
Accrued pensions	(588)	(566)
Pension Plan
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, Beginning of year	2,386	3,534
Service cost	7	9	$ 9
Interest cost	111	73	65
Actuarial losses/(gains)	119	(934)
Benefits paid	(129)	(140)
Foreign currency translation adjustments	47	(126)
Settlements	(320)	(22)
Other	(5)	(8)
Projected benefit obligation, End of year	2,216	2,386	3,534
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	1,974	2,975
Actual return on plan assets	88	(734)
Company contributions	46	11
Benefits paid	(101)	(114)
Plan settlements	(320)	(22)
Foreign currency translation adjustments	45	(140)
Other	(3)	(2)
End balance	1,729	1,974	2,975
Funded Status	(487)	(412)
Amounts recognized in the Consolidated Balance Sheet:
Other assets (long-term)	152	183
Accounts payable and accrued liabilities	(51)	(29)
Accrued pensions	(588)	(566)
Net liability recognized	(487)	(412)
Other Postretirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, Beginning of year	524	724
Service cost	4	8	12
Interest cost	27	16	14
Plan amendments	(17)	0
Actuarial losses/(gains)	0	(174)
Benefits paid	(42)	(44)
Foreign currency translation adjustments	1	(6)
Curtailments	(2)	0
Projected benefit obligation, End of year	495	524	724
Amounts recognized in the Consolidated Balance Sheet:
Accounts payable and accrued liabilities	(45)	(48)
Other postretirement benefits	(450)	(476)
Net liability recognized	(495)	(524)
United States
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Company contributions	28	0	0
United States | Pension Plan
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, Beginning of year	1,425	1,920
Service cost	0	0
Interest cost	62	45
Actuarial losses/(gains)	44	(449)
Benefits paid	(79)	(91)
Foreign currency translation adjustments	0	0
Settlements	(309)	0
Other	0	0
Projected benefit obligation, End of year	1,143	1,425	1,920
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	1,028	1,329
Actual return on plan assets	45	(228)
Company contributions	28	0
Benefits paid	(61)	(73)
Plan settlements	(309)	0
Foreign currency translation adjustments	0	0
Other	0	0
End balance	731	1,028	1,329
Funded Status	(412)	(397)
Amounts recognized in the Consolidated Balance Sheet:
Other assets (long-term)	0	0
Accounts payable and accrued liabilities	(38)	(17)
Accrued pensions	(374)	(380)
Net liability recognized	(412)	(397)
United States | Other Postretirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, Beginning of year	458	631
Service cost	4	8
Interest cost	23	13
Plan amendments	(17)	0
Actuarial losses/(gains)	(3)	(154)
Benefits paid	(39)	(40)
Foreign currency translation adjustments	0	0
Curtailments	(2)	0
Projected benefit obligation, End of year	424	458	631
Amounts recognized in the Consolidated Balance Sheet:
Accounts payable and accrued liabilities	(41)	(44)
Other postretirement benefits	(383)	(414)
Net liability recognized	(424)	(458)
International
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Company contributions	18	11	10
International | Pension Plan
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, Beginning of year	961	1,614
Service cost	7	9
Interest cost	49	28
Actuarial losses/(gains)	75	(485)
Benefits paid	(50)	(49)
Foreign currency translation adjustments	47	(126)
Settlements	(11)	(22)
Other	(5)	(8)
Projected benefit obligation, End of year	1,073	961	1,614
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	946	1,646
Actual return on plan assets	43	(506)
Company contributions	18	11
Benefits paid	(40)	(41)
Plan settlements	(11)	(22)
Foreign currency translation adjustments	45	(140)
Other	(3)	(2)
End balance	998	946	1,646
Funded Status	(75)	(15)
Amounts recognized in the Consolidated Balance Sheet:
Other assets (long-term)	152	183
Accounts payable and accrued liabilities	(13)	(12)
Accrued pensions	(214)	(186)
Net liability recognized	(75)	(15)
International | Other Postretirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation, Beginning of year	66	93
Service cost	0	0
Interest cost	4	3
Plan amendments	0	0
Actuarial losses/(gains)	3	(20)
Benefits paid	(3)	(4)
Foreign currency translation adjustments	1	(6)
Curtailments	0	0
Projected benefit obligation, End of year	71	66	$ 93
Amounts recognized in the Consolidated Balance Sheet:
Accounts payable and accrued liabilities	(4)	(4)
Other postretirement benefits	(67)	(62)
Net liability recognized	$ (71)	$ (66)

Employee Benefit Plans (Accumul

Employee Benefit Plans (Accumulated Other Comprehensive Loss Pretax Amounts Not Yet Reflected in Net Periodic Benefit Cost) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated net actuarial losses/(gains)	$ 682	$ 748
Accumulated prior service credit	0	0
Total	682	748
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Accumulated net actuarial losses/(gains)	(15)	(16)
Accumulated prior service credit	(20)	(10)
Total	$ (35)	$ (26)

Employee Benefit Plans (Change

Employee Benefit Plans (Change in Accumulated Other Comprehensive Loss (Pretax) Relating to Defined Benefit Pension and Other Postretirement Benefits) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss arising during the year	$ 0
Plan amendment	17
Amortization of actuarial loss/(gain)	(1)	$ 12	$ 20
Amortization of prior service credit	7	11	54
Foreign currency translation adjustments	0
Impact of settlements	0
Net decrease	(9)
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss arising during the year	141
Plan amendment	0
Amortization of actuarial loss/(gain)	21	$ 34	$ 39
Amortization of prior service credit	0
Foreign currency translation adjustments	8
Impact of settlements	(194)
Net decrease	$ (66)

Employee Benefit Plans (Net Per

Employee Benefit Plans (Net Periodic Benefit Costs) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 4	$ 8	$ 12
Interest cost	27	16	14
Amortization of prior service credit	(7)	(11)	(54)
Amortization of actuarial losses/(gains)	(1)	12	20
Settlements, curtailments, and special termination benefits	2
Net periodic benefit cost/(income)	21	25	(8)
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	7	9	9
Interest cost	111	73	65
Expected return on plan assets	110	140	152
Amortization of prior service credit	0
Amortization of actuarial losses/(gains)	21	34	39
Settlements, curtailments, and special termination benefits	192	6	53
Net periodic benefit cost/(income)	$ 221	$ (18)	$ 14

Employee Benefit Plans (Weighte

Employee Benefit Plans (Weighted Average Assumptions Used to Determine Benefit Obligation for Defined Benefit Pension and Other Postretirement Plans) (Detail)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Discount rate used to calculate benefit obligation	4.90%	5.20%
Rate of compensation increase	2.80%	2.70%
Return on plan assets assumption	6.50%	5%	4.80%
United States
Defined Benefit Plan Disclosure [Line Items]
Discount rate used to calculate benefit obligation	5.20%	5.40%
Rate of compensation increase	2.50%	2.50%
Return on plan assets assumption	7.40%
International
Defined Benefit Plan Disclosure [Line Items]
Discount rate used to calculate benefit obligation	4.50%	4.90%
Rate of compensation increase	3.20%	3.10%

Employee Benefit Plans (Weigh_2

Employee Benefit Plans (Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost for Defined Benefit Pension and Other Postretirement Plans) (Detail)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate used to calculate benefit obligation	4.90%	5.20%
Discount rate	5.20%	2.50%	2.10%
Expected return on assets	6.50%	5%	4.80%
Rate of compensation increase	2.70%	2.60%	1.50%
United States
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate used to calculate benefit obligation	5.20%	5.40%
Expected return on assets	7.40%

Employee Benefit Plans (Weigh_3

Employee Benefit Plans (Weighted Average Target Pension Plan Asset Allocations) (Detail)	Dec. 31, 2023	Dec. 31, 2022
Minimum | Equity Securities
Asset Category
Weighted average target pension plan asset allocation, minimum	15%	15%
Minimum | Debt securities
Asset Category
Weighted average target pension plan asset allocation, minimum	30%	30%
Minimum | Real Estate
Asset Category
Weighted average target pension plan asset allocation, minimum	0%	0%
Minimum | Other
Asset Category
Weighted average target pension plan asset allocation, minimum	20%	20%
Maximum | Equity Securities
Asset Category
Weighted average target pension plan asset allocation, minimum	45%	45%
Maximum | Debt securities
Asset Category
Weighted average target pension plan asset allocation, minimum	65%	65%
Maximum | Real Estate
Asset Category
Weighted average target pension plan asset allocation, minimum	10%	10%
Maximum | Other
Asset Category
Weighted average target pension plan asset allocation, minimum	40%	40%

Employee Benefit Plans (Fair Va

Employee Benefit Plans (Fair Values of the Company's Pension Plan Assets by Asset Category) (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	$ 1,729	$ 1,974
Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	1,245	1,529
Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	199	246
Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	447	606
Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	599	677	$ 954
Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	484	445
Defined Benefit Plan, Equity Securities, US, Large Cap | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	120	109
Defined Benefit Plan, Equity Securities, US, Large Cap | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	65	66
Defined Benefit Plan, Equity Securities, US, Large Cap | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	55	43
Defined Benefit Plan, Equity Securities, US, Large Cap | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Defined Benefit Plan, Equity Securities, US, Small Cap | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	16	25
Defined Benefit Plan, Equity Securities, US, Small Cap | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	16	25
Defined Benefit Plan, Equity Securities, US, Small Cap | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Defined Benefit Plan, Equity Securities, US, Small Cap | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Defined Benefit Plan, Equity Securities, Non-US | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	139	142
Defined Benefit Plan, Equity Securities, Non-US | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	96	99
Defined Benefit Plan, Equity Securities, Non-US | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	43	43
Defined Benefit Plan, Equity Securities, Non-US | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Defined Benefit Plan, Cash and Cash Equivalents | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	63	54
Defined Benefit Plan, Cash and Cash Equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	22	7
Defined Benefit Plan, Cash and Cash Equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	41	47
Defined Benefit Plan, Cash and Cash Equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Debt Security, Corporate, US | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	1	248
Debt Security, Corporate, US | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Debt Security, Corporate, US | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	1	168
Debt Security, Corporate, US | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	80
Debt Security, Developed Markets And Emerging Economies | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	1
Debt Security, Developed Markets And Emerging Economies | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Debt Security, Developed Markets And Emerging Economies | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	1
Debt Security, Developed Markets And Emerging Economies | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Debt Security, Diverse Portfolio | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	13
Debt Security, Diverse Portfolio | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Debt Security, Diverse Portfolio | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	13
Debt Security, Diverse Portfolio | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
US Government Agencies Debt Securities | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	59
US Government Agencies Debt Securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	49
US Government Agencies Debt Securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	10
US Government Agencies Debt Securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Developed Markets, Government Agencies Debt Securities | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	1	6
Developed Markets, Government Agencies Debt Securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Developed Markets, Government Agencies Debt Securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	1	6
Developed Markets, Government Agencies Debt Securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Other | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	258	235
Other | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Other | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Other | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	258	235
Defined Benefit Plan, Real Estate, Hedge Funds, And Other [Member] | Fair Value, Inputs, Level 1, 2 and 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	647	637
Defined Benefit Plan, Real Estate, Hedge Funds, And Other [Member] | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	0	0
Defined Benefit Plan, Real Estate, Hedge Funds, And Other [Member] | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	306	275
Defined Benefit Plan, Real Estate, Hedge Funds, And Other [Member] | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets	$ 341	$ 362

Employee Benefit Plans (Chang_2

Employee Benefit Plans (Change in Fair Value of Company's Level 3 Pension Assets) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	$ 1,974
End balance	1,729	$ 1,974
Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	677	954
Realized gains/(losses)	0	(99)
Unrealized gains	2	3
Transfers in/(out), net	(115)	(122)
Foreign currency losses	35	(59)
End balance	599	677
Level 3 | Real Estate
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	149	157
Realized gains/(losses)	4	1
Unrealized gains	(19)	6
Transfers in/(out), net	(17)	(10)
Foreign currency losses	2	(5)
End balance	119	149
Level 3 | Other Debt Securities
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	235	367
Realized gains/(losses)	25	(99)
Unrealized gains	0	0
Transfers in/(out), net	(9)	(12)
Foreign currency losses	7	(21)
End balance	258	235
Level 3 | Hedge Funds and Other Assets
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	293	430
Realized gains/(losses)	(29)	(1)
Unrealized gains	21	(3)
Transfers in/(out), net	(89)	(100)
Foreign currency losses	26	(33)
End balance	$ 222	$ 293

Employee Benefit Plans (Other P

Employee Benefit Plans (Other Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined contribution plan contribution rates as percentage of employee earnings	6%
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	100%
Compensation expense related to the ESOP	$ 61	$ 56	$ 52
Deductible dividends on PPG shares held by the ESOP	11	11	10
Recognized expense for defined contribution pension plans	90	92	88
Expense (income) of the deferred compensation plan	23	23	20
Increase (Decrease) in fair value of investments	21	24	$ 18
Obligations under the deferred compensation plan	113	105
Investments in marketable securities by the deferred compensation plan	$ 83	$ 70
Minimum
Defined contribution plan contribution rates as percentage of employee earnings	2%
Maximum
Defined contribution plan contribution rates as percentage of employee earnings	5%

Commitments and Contingent Li_3

Commitments and Contingent Liabilities (Asbestos Matters) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Asbestos-related claims reserve adjustment	$ 0	$ 0	$ (133)
Asbestos Issue
Asbestos-related claims reserve adjustment		133
Loss contingency accrual	$ 48	51
Asbestos Claim Products Reserve
Asbestos-related claims reserve adjustment		$ 146

Commitments and Contingent Li_4

Commitments and Contingent Liabilities (Environmental Matters) (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended				48 Months Ended
	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2024
Environmental Matters [Abstract]
Reserves for environmental contingencies	$ 227		$ 227	$ 217
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Other liabilities		Other liabilities
Environmental Loss Contingency, Current, Statement of Financial Position [Extensible Enumeration]	Accounts payable and accrued liabilities		Accounts payable and accrued liabilities
Reserves for environmental contingencies classified as current liabilities	$ 52		$ 52	50
Pretax charges for environmental remediation costs	30		$ 46	$ 13	$ 44
Environmental Remediation Expense, Statement of Income or Comprehensive Income [Extensible Enumeration]			Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Cash outlays related to environmental remediation			$ 36	$ 78	$ 56
Historical low end of range of annual environmental remediation expense over the past 15 years	5		5
Historical high end of range of annual environmental remediation expense over the past 15 years	40		$ 40
Remediation Period			10 years
Glass Segment
Environmental Matters [Abstract]
Income from discontinued operations, before tax	25
Income from discontinued operations, net of tax	$ 19
Scenario, Forecast | Maximum
Environmental Matters [Abstract]
Cash for environmental loss contingencies, low estimate		$ 60
Cash for environmental loss contingencies, high estimate						$ 75
Unreserved loss contingencies related to environmental matters, high estimate		200
Scenario, Forecast | Minimum
Environmental Matters [Abstract]
Cash for environmental loss contingencies, low estimate		40				$ 20
Unreserved loss contingencies related to environmental matters, high estimate		$ 100
Excavation of Soil
Environmental Matters [Abstract]
Percentage of the total remaining reserve	65%		65%
Groundwater Remediation
Environmental Matters [Abstract]
Percentage of the total remaining reserve	10%		10%
Jersey City Manufacturing Plant
Environmental Matters [Abstract]
Reserves for environmental contingencies	$ 53		$ 53	58
Pretax charges for environmental remediation costs			7	0	25
Glass and Chemical Sites
Environmental Matters [Abstract]
Reserves for environmental contingencies	54		54	60
Pretax charges for environmental remediation costs			5	3	12
Other Environmental Contingencies
Environmental Matters [Abstract]
Reserves for environmental contingencies	$ 120		120	99
Pretax charges for environmental remediation costs			$ 34	$ 10	$ 7

Shareholders' Equity (Summary o

Shareholders' Equity (Summary of Shares Outstanding) (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Shareholders' Equity Note [Line Items]
Preferred stock without par value (in dollars per share)	$ 10,000,000
Shares of common stock authorized	1,200,000,000
Per share cash dividends paid (in dollars per share)	$ 2.54	$ 2.42	$ 2.26
Common stock, par or stated value per share	$ 1.667
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	235,073,926	235,907,026	236,686,265
Purchases (in shares)	(673,638)	(1,269,830)	(1,521,765)
Issuances (in shares)	810,566	436,730	742,526
Ending balance (in shares)	235,210,854	235,073,926	235,907,026
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	581,146,136	581,146,136	581,146,136
Ending balance (in shares)	581,146,136	581,146,136	581,146,136
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	346,072,210	345,239,110	344,459,871
Purchases (in shares)	(673,638)	(1,269,830)	(1,521,765)
Issuances (in shares)	810,566	436,730	742,526
Ending balance (in shares)	345,935,282	346,072,210	345,239,110

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 6,709	$ 6,411	$ 5,815
Ending balance	8,023	6,709	6,411
Unrealized foreign currency translation adjustment, tax	47	73	55
Adjustment for pension and other postretirement benefits, tax	20	83	48
Foreign Currency Translation Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(2,254)	(1,988)	(1,663)
Current year deferrals to AOCL	475	(301)	(325)
Reclassifications from AOCL to net income	33	35	0
Ending balance	(1,746)	(2,254)	(1,988)
Pension and Other Post retirement Benefit Adjustments, net of tax
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(557)	(763)	(937)
Current year deferrals to AOCL	(93)	175	132
Reclassifications from AOCL to net income	156	31	42
Ending balance	(494)	(557)	(763)
Unrealized Gain (Loss) on Derivatives, net of tax
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	1	1	1
Current year deferrals to AOCL	0	0	0
Reclassifications from AOCL to net income	0	0	0
Ending balance	1	1	1
Accumulated Other Comprehensive Loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(2,810)	(2,750)	(2,599)
Current year deferrals to AOCL	382	(126)	(193)
Reclassifications from AOCL to net income	189	66	42
Ending balance	$ (2,239)	$ (2,810)	$ (2,750)

Other (Income)_Charges, Net (De

Other (Income)/Charges, Net (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Site Contingency [Line Items]
Environmental charges	$ 30	$ 46	$ 13	$ 44
Pension and other postretirement benefit plans, non-service cost components		39	(10)	(15)
Share of net earnings of equity affiliates (See Note 5)		(21)	(25)	(15)
Gain on sale of assets		23	(4)	(44)
Foreign Currency Transaction Gain (Loss), before Tax		20	0	0
Royalty income		(10)	(8)	(8)
Business restructuring (income)/charges, net		(2)	33	31
Income from legal settlements		0	0	(22)
Other income, net		(12)	(26)	(83)
Total other charges/(income), net		83	(27)	(112)
Gain on sale of production facility			$ 22	$ 34
Legacy PPG Manufacturing Sites
Site Contingency [Line Items]
Environmental charges		$ 30

Stock-Based Compensation (Activ

Stock-Based Compensation (Activity) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-Based Payment Arrangement [Abstract]
Stock-based compensation expense	$ 59	$ 35	$ 57
Total income tax benefit recognized related to the stock-based compensation	$ 12	$ 8	$ 12

Stock-Based Compensation (Addit

Stock-Based Compensation (Additional Information) (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum term of the outstanding stock options for the PPG Omnibus Plan and the PPG Stock Plan for certain employees	10 years
Weighted average fair value of options granted (in dollars per share)	$ 38.55	$ 36.52	$ 29.27
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	36 months
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost that have not yet vested	$ 9
Cost not yet recognized, period for recognition	1 year 8 months 12 days
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Total unrecognized compensation cost that have not yet vested	$ 22
Cost not yet recognized, period for recognition	1 year 8 months 12 days
Restricted Stock Units (RSUs) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of the target award that is paid based on performance	200%
Restricted Stock Units (RSUs) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of the target award that is paid based on performance	0%
Restricted Stock Units (RSUs) | Share-based Payment Arrangement, 2020-2022 Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of the target award that is assumed to vest for the purposes of expense recognition	133%
Restricted Stock Units (RSUs) | Share-based Payment Arrangement, 2021-2023 Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of the target award that is assumed to vest for the purposes of expense recognition	100%
Restricted Stock Units (RSUs) | Share-based Payment Arrangement, 2022-2024 Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of the target award that is assumed to vest for the purposes of expense recognition	100%
Contingent Share Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Total unrecognized compensation cost that have not yet vested	$ 9
Cost not yet recognized, period for recognition	1 year 9 months 18 days
Earned payout if the target performance is achieved	100%
Payout, percentage	55.20%
Contingent Share Grants | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of the target award that is paid based on performance	200%
Contingent Share Grants | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of the target award that is paid based on performance	0%

Stock-Based Compensation (Weigh

Stock-Based Compensation (Weighted Average Assumptions Used in Calculating Fair Value of Stock Option) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-Based Payment Arrangement [Abstract]
Weighted average exercise price	$ 130.17	$ 151.87	$ 136.60
Risk-free interest rate	3.90%	2%	1%
Expected life of option in years	6 years 6 months	6 years 6 months	6 years 6 months
Expected dividend yield	1.70%	1.60%	1.60%
Expected volatility	27.80%	25.70%	25.30%

Stock-Based Compensation (Stock

Stock-Based Compensation (Stock Options Outstanding, Exercisable and Activity) (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Number of Shares
Beginning Balance	3,517,451
Granted	410,001
Exercised	(566,439)
Forfeited/Expired	(42,250)
Ending Balance	3,318,763	3,517,451
Vested or expected to vest, at end of period	3,225,942
Exercisable, at end of period	2,042,184
Weighted Average Exercise Price
Beginning Balance (in dollars per share)	$ 117.16
Granted (in dollars per share)	130.17
Exercised (in dollars per share)	96.64
Forfeited/Expired (in dollars per share)	138.64
Ending Balance (in dollars per share)	122	$ 117.16
Vested or expected to vest, at end of period (in dollars per share)	121.44
Exercisable, at end of period (in dollars per share)	$ 110.97
Weighted Average Remaining Contractual Life (in years)
Outstanding	5 years 8 months 12 days	5 years 8 months 12 days
Vested or expected to vest, at end of period	5 years 7 months 6 days
Exercisable, at end of period	4 years 1 month 6 days
Intrinsic Value (in millions)
Outstanding	$ 92
Vested or expected to vest, at end of period	92
Exercisable, at end of period	$ 79

Stock-Based Compensation (Sto_2

Stock-Based Compensation (Stock Option Activity) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-Based Payment Arrangement [Abstract]
Total intrinsic value of stock options exercised	$ 24	$ 12	$ 32
Cash received from stock option exercises	55	12	47
Income tax benefit from the exercise of stock options	6	3	8
Total fair value of stock options vested	$ 10	$ 16	$ 11

Stock-Based Compensation (RSU A

Stock-Based Compensation (RSU Activity) (Details)	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Beginning Balance | shares	589,388
Granted | shares	321,045
Vested | shares	(271,037)
Forfeited | shares	(33,455)
Ending Balance | shares	605,941
Vested or expected vest, at end of period | shares	569,073
Weighted Average Grant Date Fair Value
Beginning Balance (in dollars per share) | $ / shares	$ 136.99
Granted (in dollars per share) | $ / shares	130.63
Released from restrictions (in dollars per share) | $ / shares	131.14
Forfeited (in dollars per share) | $ / shares	136.26
Ending Balance (in dollars per share) | $ / shares	137.96
Vested or expected to vest, at end of period (in dollars per share) | $ / shares	$ 137.94

Revenue Recognition - Narrative

Revenue Recognition - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Bad debt expense	$ 43	$ 43	$ 17	$ 52
Allowance for doubtful accounts			$ 25	31	$ 31
Russia
Disaggregation of Revenue [Line Items]
Allowance for doubtful accounts				$ 11
Service | Revenue from Contract with Customer | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Service revenue, percentage of total revenue			5%	5%	5%

Revenue Recognition - Schedule

Revenue Recognition - Schedule Of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 18,246	$ 17,652	$ 16,802
United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	7,488	7,384	6,676
EMEA
Disaggregation of Revenue [Line Items]
Net sales	5,616	5,458	5,436
Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	2,874	2,823	2,977
Latin America
Disaggregation of Revenue [Line Items]
Net sales	$ 2,268	$ 1,987	$ 1,713
Revenue from Contract with Customer | Geographic Concentration Risk | United States
Disaggregation of Revenue [Line Items]
Service revenue, percentage of total revenue	37%	38%	36%
Performance Coatings Segment
Disaggregation of Revenue [Line Items]
Net sales	$ 11,164	$ 10,694	$ 10,333
Performance Coatings Segment | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	4,912	4,718	4,366
Performance Coatings Segment | EMEA
Disaggregation of Revenue [Line Items]
Net sales	3,627	3,550	3,582
Performance Coatings Segment | Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	1,104	1,118	1,254
Performance Coatings Segment | Latin America
Disaggregation of Revenue [Line Items]
Net sales	1,521	1,308	1,131
Industrial Coatings Segment
Disaggregation of Revenue [Line Items]
Net sales	7,082	6,958	6,469
Industrial Coatings Segment | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	2,576	2,666	2,310
Industrial Coatings Segment | EMEA
Disaggregation of Revenue [Line Items]
Net sales	1,989	1,908	1,854
Industrial Coatings Segment | Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	1,770	1,705	1,723
Industrial Coatings Segment | Latin America
Disaggregation of Revenue [Line Items]
Net sales	$ 747	$ 679	$ 582

Revenue Recognition - Summary o

Revenue Recognition - Summary of Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 31	$ 31	$ 31	$ 31
Bad debt expense	$ 43	$ 43	17	52
Write-offs and recoveries of previously reserved trade receivables			(21)	(55)
Other			2	3
Ending balance			$ 25	$ 31

Reportable Business Segment I_3

Reportable Business Segment Information (Reportable Segment Information) (Detail)	12 Months Ended
	Dec. 31, 2023 Segment	Dec. 31, 2023 operating_segment Segment
Segment Reporting [Abstract]
Number of PPG operating segments	10	2
Number of PPG reportable business segments, based on economic similarities, the nature of their products, production processes, end-use markets and methods of distribution	2	2

Reportable Business Segment I_4

Reportable Business Segment Information (Reportable Segment Tables) (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting [Abstract]
Gain (Loss) on Disposition of Property Plant Equipment			$ 34
Segment Reporting, Revenue Reconciling Item [Line Items]
Total Net sales		$ 18,246	17,652	$ 16,802
Total Segment income		2,675	2,042	2,171
Corporate unallocated		(340)	(218)	(194)
Interest expense, net of interest income		(107)	(113)	(95)
Impairment and other-related charges, net	$ (89)	(160)	(245)	(21)
Business restructuring-related costs, net		(43)	(75)	(27)
Transaction-related costs, net		(53)	(10)	(86)
Pension settlement charge		(190)	0	(50)
Environmental remediation charges, net(5)		(30)	0	(35)
Insurance recoveries		16	0	0
Argentina currency devaluation losses		(20)	0	0
Expense incurred due to natural disasters		0	0	(17)
Change in allowance for doubtful accounts related to COVID-19		0	0	14	$ (30)
Income from legal settlements		0	0	22
Asbestos-related claims reserve adjustment		0	0	133
Total Income before income taxes		1,748	1,381	1,815
Depreciation and amortization		558	554	561
Share of net earnings of equity affiliates		21	25	15
Segment assets		21,647	20,744	21,351
Investment in equity affiliates		141	134	126
Expenditures for property (including business acquisitions)		658	632	2,508
Corporate, Non-Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Depreciation and amortization		66	51	41
Share of net earnings of equity affiliates		13	18	10
Segment assets		2,570	1,854	2,149
Investment in equity affiliates		75	77	78
Expenditures for property (including business acquisitions)		131	65	26
Performance Coatings Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Total Net sales		11,164	10,694	10,333
Performance Coatings Segment | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Total Net sales		11,164	10,694	10,333
Total Segment income		1,709	1,399	1,491
Depreciation and amortization		279	296	308
Share of net earnings of equity affiliates		7	7	5
Segment assets		13,434	13,088	13,395
Investment in equity affiliates		48	42	33
Expenditures for property (including business acquisitions)		343	254	1,698
Industrial Coatings Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Total Net sales		7,082	6,958	6,469
Share of net earnings of equity affiliates		1	0	0
Industrial Coatings Segment | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Total Net sales		7,082	6,958	6,469
Total Segment income		966	643	680
Depreciation and amortization		213	207	212
Segment assets		5,643	5,802	5,807
Investment in equity affiliates		18	15	15
Expenditures for property (including business acquisitions)		$ 184	$ 313	$ 784

Reportable Business Segment I_5

Reportable Business Segment Information (Geographic Information) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting, Revenue Reconciling Item [Line Items]
Segment income	$ 2,675	$ 2,042	$ 2,171
Property, plant and equipment, net	3,644	3,328	3,442
United States and Canada
Segment Reporting, Revenue Reconciling Item [Line Items]
Segment income	1,048	819	865
Property, plant and equipment, net	1,559	1,394	1,377
EMEA
Segment Reporting, Revenue Reconciling Item [Line Items]
Segment income	679	505	612
Property, plant and equipment, net	1,010	943	1,069
Asia Pacific
Segment Reporting, Revenue Reconciling Item [Line Items]
Segment income	430	332	354
Property, plant and equipment, net	718	685	702
Latin America
Segment Reporting, Revenue Reconciling Item [Line Items]
Segment income	518	386	340
Property, plant and equipment, net	$ 357	$ 306	$ 294

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Schedule II - Valuation and Qualifying Accounts	Schedule II – Valuation and Qualifying Accounts Allowance for Doubtful Accounts for the Years Ended December 31, 2023, 2022, and 2021 ($ in millions) Balance at Beginning of Year Charged to Costs and Expenses(1) Deductions(1, 2) Balance at End of Year 2023 $31 $17 ($23) $25 2022 $31 $52 ($52) $31 2021 $44 $5 ($18) $31 (1) In the first quarter 2022, PPG recorded a bad debt reserve of $43 million associated with the adverse economic impacts of the Russian invasion of Ukraine. Subsequently, the Company released a portion of this previously established bad debt reserve due to the collection of certain trade receivables. In 2020, PPG recorded an allowance for doubtful accounts of $30 million related to the potential financial impacts of COVID-19. In 2021, PPG released a portion of the previously established reserve due to improvement in economic conditions in certain countries and a slower pattern of bankruptcies than expected. (2) Notes and accounts receivable written off as uncollectible, net of recoveries, amounts attributable to divestitures and changes attributable to foreign currency translation.
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 182
Balance at End of Year	249	$ 182
Accounts Receivable, Credit Loss Expense (Reversal), CARES Act	0	0	$ (14)	$ 30
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	31	31	44
Charged to Costs and Expenses	17	52	5
Deductions	(23)	(52)	(18)
Balance at End of Year	$ 25	$ 31	$ 31	$ 44